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 void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 47 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 48 static int 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 int 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 int 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 -ENOTSUP; 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 return -EAGAIN; 771 } 772 773 return 0; 774 } 775 776 static int 777 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 778 { 779 struct virtio_hw *hw = dev->data->dev_private; 780 struct virtio_pmd_ctrl ctrl; 781 int dlen[1]; 782 int ret; 783 784 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 785 PMD_INIT_LOG(INFO, "host does not support rx control"); 786 return -ENOTSUP; 787 } 788 789 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 790 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 791 ctrl.data[0] = 0; 792 dlen[0] = 1; 793 794 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 795 if (ret) { 796 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 797 return -EAGAIN; 798 } 799 800 return 0; 801 } 802 803 static void 804 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 805 { 806 struct virtio_hw *hw = dev->data->dev_private; 807 struct virtio_pmd_ctrl ctrl; 808 int dlen[1]; 809 int ret; 810 811 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 812 PMD_INIT_LOG(INFO, "host does not support rx control"); 813 return; 814 } 815 816 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 817 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 818 ctrl.data[0] = 1; 819 dlen[0] = 1; 820 821 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 822 if (ret) 823 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 824 } 825 826 static void 827 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 828 { 829 struct virtio_hw *hw = dev->data->dev_private; 830 struct virtio_pmd_ctrl ctrl; 831 int dlen[1]; 832 int ret; 833 834 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 835 PMD_INIT_LOG(INFO, "host does not support rx control"); 836 return; 837 } 838 839 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 840 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 841 ctrl.data[0] = 0; 842 dlen[0] = 1; 843 844 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 845 if (ret) 846 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 847 } 848 849 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 850 static int 851 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 852 { 853 struct virtio_hw *hw = dev->data->dev_private; 854 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 855 hw->vtnet_hdr_size; 856 uint32_t frame_size = mtu + ether_hdr_len; 857 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 858 859 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 860 861 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 862 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 863 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 864 return -EINVAL; 865 } 866 return 0; 867 } 868 869 static int 870 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 871 { 872 struct virtio_hw *hw = dev->data->dev_private; 873 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 874 struct virtqueue *vq = rxvq->vq; 875 876 virtqueue_enable_intr(vq); 877 virtio_mb(hw->weak_barriers); 878 return 0; 879 } 880 881 static int 882 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 883 { 884 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 885 struct virtqueue *vq = rxvq->vq; 886 887 virtqueue_disable_intr(vq); 888 return 0; 889 } 890 891 /* 892 * dev_ops for virtio, bare necessities for basic operation 893 */ 894 static const struct eth_dev_ops virtio_eth_dev_ops = { 895 .dev_configure = virtio_dev_configure, 896 .dev_start = virtio_dev_start, 897 .dev_stop = virtio_dev_stop, 898 .dev_close = virtio_dev_close, 899 .promiscuous_enable = virtio_dev_promiscuous_enable, 900 .promiscuous_disable = virtio_dev_promiscuous_disable, 901 .allmulticast_enable = virtio_dev_allmulticast_enable, 902 .allmulticast_disable = virtio_dev_allmulticast_disable, 903 .mtu_set = virtio_mtu_set, 904 .dev_infos_get = virtio_dev_info_get, 905 .stats_get = virtio_dev_stats_get, 906 .xstats_get = virtio_dev_xstats_get, 907 .xstats_get_names = virtio_dev_xstats_get_names, 908 .stats_reset = virtio_dev_stats_reset, 909 .xstats_reset = virtio_dev_stats_reset, 910 .link_update = virtio_dev_link_update, 911 .vlan_offload_set = virtio_dev_vlan_offload_set, 912 .rx_queue_setup = virtio_dev_rx_queue_setup, 913 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 914 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 915 .rx_queue_release = virtio_dev_queue_release, 916 .rx_descriptor_done = virtio_dev_rx_queue_done, 917 .tx_queue_setup = virtio_dev_tx_queue_setup, 918 .tx_queue_release = virtio_dev_queue_release, 919 /* collect stats per queue */ 920 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 921 .vlan_filter_set = virtio_vlan_filter_set, 922 .mac_addr_add = virtio_mac_addr_add, 923 .mac_addr_remove = virtio_mac_addr_remove, 924 .mac_addr_set = virtio_mac_addr_set, 925 }; 926 927 /* 928 * dev_ops for virtio-user in secondary processes, as we just have 929 * some limited supports currently. 930 */ 931 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 932 .dev_infos_get = virtio_dev_info_get, 933 .stats_get = virtio_dev_stats_get, 934 .xstats_get = virtio_dev_xstats_get, 935 .xstats_get_names = virtio_dev_xstats_get_names, 936 .stats_reset = virtio_dev_stats_reset, 937 .xstats_reset = virtio_dev_stats_reset, 938 /* collect stats per queue */ 939 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 940 }; 941 942 static void 943 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 944 { 945 unsigned i; 946 947 for (i = 0; i < dev->data->nb_tx_queues; i++) { 948 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 949 if (txvq == NULL) 950 continue; 951 952 stats->opackets += txvq->stats.packets; 953 stats->obytes += txvq->stats.bytes; 954 955 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 956 stats->q_opackets[i] = txvq->stats.packets; 957 stats->q_obytes[i] = txvq->stats.bytes; 958 } 959 } 960 961 for (i = 0; i < dev->data->nb_rx_queues; i++) { 962 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 963 if (rxvq == NULL) 964 continue; 965 966 stats->ipackets += rxvq->stats.packets; 967 stats->ibytes += rxvq->stats.bytes; 968 stats->ierrors += rxvq->stats.errors; 969 970 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 971 stats->q_ipackets[i] = rxvq->stats.packets; 972 stats->q_ibytes[i] = rxvq->stats.bytes; 973 } 974 } 975 976 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 977 } 978 979 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 980 struct rte_eth_xstat_name *xstats_names, 981 __rte_unused unsigned limit) 982 { 983 unsigned i; 984 unsigned count = 0; 985 unsigned t; 986 987 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 988 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 989 990 if (xstats_names != NULL) { 991 /* Note: limit checked in rte_eth_xstats_names() */ 992 993 for (i = 0; i < dev->data->nb_rx_queues; i++) { 994 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 995 if (rxvq == NULL) 996 continue; 997 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 998 snprintf(xstats_names[count].name, 999 sizeof(xstats_names[count].name), 1000 "rx_q%u_%s", i, 1001 rte_virtio_rxq_stat_strings[t].name); 1002 count++; 1003 } 1004 } 1005 1006 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1007 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1008 if (txvq == NULL) 1009 continue; 1010 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1011 snprintf(xstats_names[count].name, 1012 sizeof(xstats_names[count].name), 1013 "tx_q%u_%s", i, 1014 rte_virtio_txq_stat_strings[t].name); 1015 count++; 1016 } 1017 } 1018 return count; 1019 } 1020 return nstats; 1021 } 1022 1023 static int 1024 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1025 unsigned n) 1026 { 1027 unsigned i; 1028 unsigned count = 0; 1029 1030 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1031 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1032 1033 if (n < nstats) 1034 return nstats; 1035 1036 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1037 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1038 1039 if (rxvq == NULL) 1040 continue; 1041 1042 unsigned t; 1043 1044 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1045 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1046 rte_virtio_rxq_stat_strings[t].offset); 1047 xstats[count].id = count; 1048 count++; 1049 } 1050 } 1051 1052 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1053 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1054 1055 if (txvq == NULL) 1056 continue; 1057 1058 unsigned t; 1059 1060 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1061 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1062 rte_virtio_txq_stat_strings[t].offset); 1063 xstats[count].id = count; 1064 count++; 1065 } 1066 } 1067 1068 return count; 1069 } 1070 1071 static int 1072 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1073 { 1074 virtio_update_stats(dev, stats); 1075 1076 return 0; 1077 } 1078 1079 static int 1080 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1081 { 1082 unsigned int i; 1083 1084 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1085 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1086 if (txvq == NULL) 1087 continue; 1088 1089 txvq->stats.packets = 0; 1090 txvq->stats.bytes = 0; 1091 txvq->stats.multicast = 0; 1092 txvq->stats.broadcast = 0; 1093 memset(txvq->stats.size_bins, 0, 1094 sizeof(txvq->stats.size_bins[0]) * 8); 1095 } 1096 1097 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1098 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1099 if (rxvq == NULL) 1100 continue; 1101 1102 rxvq->stats.packets = 0; 1103 rxvq->stats.bytes = 0; 1104 rxvq->stats.errors = 0; 1105 rxvq->stats.multicast = 0; 1106 rxvq->stats.broadcast = 0; 1107 memset(rxvq->stats.size_bins, 0, 1108 sizeof(rxvq->stats.size_bins[0]) * 8); 1109 } 1110 1111 return 0; 1112 } 1113 1114 static void 1115 virtio_set_hwaddr(struct virtio_hw *hw) 1116 { 1117 vtpci_write_dev_config(hw, 1118 offsetof(struct virtio_net_config, mac), 1119 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1120 } 1121 1122 static void 1123 virtio_get_hwaddr(struct virtio_hw *hw) 1124 { 1125 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) { 1126 vtpci_read_dev_config(hw, 1127 offsetof(struct virtio_net_config, mac), 1128 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1129 } else { 1130 rte_eth_random_addr(&hw->mac_addr[0]); 1131 virtio_set_hwaddr(hw); 1132 } 1133 } 1134 1135 static int 1136 virtio_mac_table_set(struct virtio_hw *hw, 1137 const struct virtio_net_ctrl_mac *uc, 1138 const struct virtio_net_ctrl_mac *mc) 1139 { 1140 struct virtio_pmd_ctrl ctrl; 1141 int err, len[2]; 1142 1143 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1144 PMD_DRV_LOG(INFO, "host does not support mac table"); 1145 return -1; 1146 } 1147 1148 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1149 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1150 1151 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1152 memcpy(ctrl.data, uc, len[0]); 1153 1154 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 1155 memcpy(ctrl.data + len[0], mc, len[1]); 1156 1157 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1158 if (err != 0) 1159 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1160 return err; 1161 } 1162 1163 static int 1164 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 1165 uint32_t index, uint32_t vmdq __rte_unused) 1166 { 1167 struct virtio_hw *hw = dev->data->dev_private; 1168 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 1169 unsigned int i; 1170 struct virtio_net_ctrl_mac *uc, *mc; 1171 1172 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1173 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1174 return -EINVAL; 1175 } 1176 1177 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1178 sizeof(uc->entries)); 1179 uc->entries = 0; 1180 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1181 sizeof(mc->entries)); 1182 mc->entries = 0; 1183 1184 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1185 const struct rte_ether_addr *addr 1186 = (i == index) ? mac_addr : addrs + i; 1187 struct virtio_net_ctrl_mac *tbl 1188 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1189 1190 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1191 } 1192 1193 return virtio_mac_table_set(hw, uc, mc); 1194 } 1195 1196 static void 1197 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1198 { 1199 struct virtio_hw *hw = dev->data->dev_private; 1200 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1201 struct virtio_net_ctrl_mac *uc, *mc; 1202 unsigned int i; 1203 1204 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1205 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1206 return; 1207 } 1208 1209 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1210 sizeof(uc->entries)); 1211 uc->entries = 0; 1212 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1213 sizeof(mc->entries)); 1214 mc->entries = 0; 1215 1216 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1217 struct virtio_net_ctrl_mac *tbl; 1218 1219 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1220 continue; 1221 1222 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1223 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1224 RTE_ETHER_ADDR_LEN); 1225 } 1226 1227 virtio_mac_table_set(hw, uc, mc); 1228 } 1229 1230 static int 1231 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1232 { 1233 struct virtio_hw *hw = dev->data->dev_private; 1234 1235 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1236 1237 /* Use atomic update if available */ 1238 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1239 struct virtio_pmd_ctrl ctrl; 1240 int len = RTE_ETHER_ADDR_LEN; 1241 1242 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1243 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1244 1245 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1246 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1247 } 1248 1249 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1250 return -ENOTSUP; 1251 1252 virtio_set_hwaddr(hw); 1253 return 0; 1254 } 1255 1256 static int 1257 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1258 { 1259 struct virtio_hw *hw = dev->data->dev_private; 1260 struct virtio_pmd_ctrl ctrl; 1261 int len; 1262 1263 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1264 return -ENOTSUP; 1265 1266 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1267 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1268 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1269 len = sizeof(vlan_id); 1270 1271 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1272 } 1273 1274 static int 1275 virtio_intr_unmask(struct rte_eth_dev *dev) 1276 { 1277 struct virtio_hw *hw = dev->data->dev_private; 1278 1279 if (rte_intr_ack(dev->intr_handle) < 0) 1280 return -1; 1281 1282 if (!hw->virtio_user_dev) 1283 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1284 1285 return 0; 1286 } 1287 1288 static int 1289 virtio_intr_enable(struct rte_eth_dev *dev) 1290 { 1291 struct virtio_hw *hw = dev->data->dev_private; 1292 1293 if (rte_intr_enable(dev->intr_handle) < 0) 1294 return -1; 1295 1296 if (!hw->virtio_user_dev) 1297 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1298 1299 return 0; 1300 } 1301 1302 static int 1303 virtio_intr_disable(struct rte_eth_dev *dev) 1304 { 1305 struct virtio_hw *hw = dev->data->dev_private; 1306 1307 if (rte_intr_disable(dev->intr_handle) < 0) 1308 return -1; 1309 1310 if (!hw->virtio_user_dev) 1311 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1312 1313 return 0; 1314 } 1315 1316 static int 1317 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1318 { 1319 uint64_t host_features; 1320 1321 /* Prepare guest_features: feature that driver wants to support */ 1322 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1323 req_features); 1324 1325 /* Read device(host) feature bits */ 1326 host_features = VTPCI_OPS(hw)->get_features(hw); 1327 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1328 host_features); 1329 1330 /* If supported, ensure MTU value is valid before acknowledging it. */ 1331 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1332 struct virtio_net_config config; 1333 1334 vtpci_read_dev_config(hw, 1335 offsetof(struct virtio_net_config, mtu), 1336 &config.mtu, sizeof(config.mtu)); 1337 1338 if (config.mtu < RTE_ETHER_MIN_MTU) 1339 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1340 } 1341 1342 /* 1343 * Negotiate features: Subset of device feature bits are written back 1344 * guest feature bits. 1345 */ 1346 hw->guest_features = req_features; 1347 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1348 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1349 hw->guest_features); 1350 1351 if (hw->modern) { 1352 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1353 PMD_INIT_LOG(ERR, 1354 "VIRTIO_F_VERSION_1 features is not enabled."); 1355 return -1; 1356 } 1357 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1358 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1359 PMD_INIT_LOG(ERR, 1360 "failed to set FEATURES_OK status!"); 1361 return -1; 1362 } 1363 } 1364 1365 hw->req_guest_features = req_features; 1366 1367 return 0; 1368 } 1369 1370 int 1371 virtio_dev_pause(struct rte_eth_dev *dev) 1372 { 1373 struct virtio_hw *hw = dev->data->dev_private; 1374 1375 rte_spinlock_lock(&hw->state_lock); 1376 1377 if (hw->started == 0) { 1378 /* Device is just stopped. */ 1379 rte_spinlock_unlock(&hw->state_lock); 1380 return -1; 1381 } 1382 hw->started = 0; 1383 /* 1384 * Prevent the worker threads from touching queues to avoid contention, 1385 * 1 ms should be enough for the ongoing Tx function to finish. 1386 */ 1387 rte_delay_ms(1); 1388 return 0; 1389 } 1390 1391 /* 1392 * Recover hw state to let the worker threads continue. 1393 */ 1394 void 1395 virtio_dev_resume(struct rte_eth_dev *dev) 1396 { 1397 struct virtio_hw *hw = dev->data->dev_private; 1398 1399 hw->started = 1; 1400 rte_spinlock_unlock(&hw->state_lock); 1401 } 1402 1403 /* 1404 * Should be called only after device is paused. 1405 */ 1406 int 1407 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1408 int nb_pkts) 1409 { 1410 struct virtio_hw *hw = dev->data->dev_private; 1411 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1412 int ret; 1413 1414 hw->inject_pkts = tx_pkts; 1415 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1416 hw->inject_pkts = NULL; 1417 1418 return ret; 1419 } 1420 1421 static void 1422 virtio_notify_peers(struct rte_eth_dev *dev) 1423 { 1424 struct virtio_hw *hw = dev->data->dev_private; 1425 struct virtnet_rx *rxvq; 1426 struct rte_mbuf *rarp_mbuf; 1427 1428 if (!dev->data->rx_queues) 1429 return; 1430 1431 rxvq = dev->data->rx_queues[0]; 1432 if (!rxvq) 1433 return; 1434 1435 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1436 (struct rte_ether_addr *)hw->mac_addr); 1437 if (rarp_mbuf == NULL) { 1438 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1439 return; 1440 } 1441 1442 /* If virtio port just stopped, no need to send RARP */ 1443 if (virtio_dev_pause(dev) < 0) { 1444 rte_pktmbuf_free(rarp_mbuf); 1445 return; 1446 } 1447 1448 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1449 virtio_dev_resume(dev); 1450 } 1451 1452 static void 1453 virtio_ack_link_announce(struct rte_eth_dev *dev) 1454 { 1455 struct virtio_hw *hw = dev->data->dev_private; 1456 struct virtio_pmd_ctrl ctrl; 1457 1458 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1459 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1460 1461 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1462 } 1463 1464 /* 1465 * Process virtio config changed interrupt. Call the callback 1466 * if link state changed, generate gratuitous RARP packet if 1467 * the status indicates an ANNOUNCE. 1468 */ 1469 void 1470 virtio_interrupt_handler(void *param) 1471 { 1472 struct rte_eth_dev *dev = param; 1473 struct virtio_hw *hw = dev->data->dev_private; 1474 uint8_t isr; 1475 uint16_t status; 1476 1477 /* Read interrupt status which clears interrupt */ 1478 isr = vtpci_isr(hw); 1479 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1480 1481 if (virtio_intr_unmask(dev) < 0) 1482 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1483 1484 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1485 if (virtio_dev_link_update(dev, 0) == 0) 1486 _rte_eth_dev_callback_process(dev, 1487 RTE_ETH_EVENT_INTR_LSC, 1488 NULL); 1489 1490 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1491 vtpci_read_dev_config(hw, 1492 offsetof(struct virtio_net_config, status), 1493 &status, sizeof(status)); 1494 if (status & VIRTIO_NET_S_ANNOUNCE) { 1495 virtio_notify_peers(dev); 1496 if (hw->cvq) 1497 virtio_ack_link_announce(dev); 1498 } 1499 } 1500 } 1501 } 1502 1503 /* set rx and tx handlers according to what is supported */ 1504 static void 1505 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1506 { 1507 struct virtio_hw *hw = eth_dev->data->dev_private; 1508 1509 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1510 if (vtpci_packed_queue(hw)) { 1511 PMD_INIT_LOG(INFO, 1512 "virtio: using packed ring %s Tx path on port %u", 1513 hw->use_inorder_tx ? "inorder" : "standard", 1514 eth_dev->data->port_id); 1515 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1516 } else { 1517 if (hw->use_inorder_tx) { 1518 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1519 eth_dev->data->port_id); 1520 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1521 } else { 1522 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1523 eth_dev->data->port_id); 1524 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1525 } 1526 } 1527 1528 if (vtpci_packed_queue(hw)) { 1529 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1530 PMD_INIT_LOG(INFO, 1531 "virtio: using packed ring mergeable buffer Rx path on port %u", 1532 eth_dev->data->port_id); 1533 eth_dev->rx_pkt_burst = 1534 &virtio_recv_mergeable_pkts_packed; 1535 } else { 1536 PMD_INIT_LOG(INFO, 1537 "virtio: using packed ring standard Rx path on port %u", 1538 eth_dev->data->port_id); 1539 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1540 } 1541 } else { 1542 if (hw->use_simple_rx) { 1543 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", 1544 eth_dev->data->port_id); 1545 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1546 } else if (hw->use_inorder_rx) { 1547 PMD_INIT_LOG(INFO, 1548 "virtio: using inorder Rx path on port %u", 1549 eth_dev->data->port_id); 1550 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1551 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1552 PMD_INIT_LOG(INFO, 1553 "virtio: using mergeable buffer Rx path on port %u", 1554 eth_dev->data->port_id); 1555 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1556 } else { 1557 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1558 eth_dev->data->port_id); 1559 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1560 } 1561 } 1562 1563 } 1564 1565 /* Only support 1:1 queue/interrupt mapping so far. 1566 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1567 * interrupt vectors (<N+1). 1568 */ 1569 static int 1570 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1571 { 1572 uint32_t i; 1573 struct virtio_hw *hw = dev->data->dev_private; 1574 1575 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1576 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1577 dev->intr_handle->intr_vec[i] = i + 1; 1578 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1579 VIRTIO_MSI_NO_VECTOR) { 1580 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1581 return -EBUSY; 1582 } 1583 } 1584 1585 return 0; 1586 } 1587 1588 static void 1589 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1590 { 1591 uint32_t i; 1592 struct virtio_hw *hw = dev->data->dev_private; 1593 1594 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1595 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1596 VTPCI_OPS(hw)->set_queue_irq(hw, 1597 hw->vqs[i * VTNET_CQ], 1598 VIRTIO_MSI_NO_VECTOR); 1599 } 1600 1601 static int 1602 virtio_configure_intr(struct rte_eth_dev *dev) 1603 { 1604 struct virtio_hw *hw = dev->data->dev_private; 1605 1606 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1607 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1608 return -ENOTSUP; 1609 } 1610 1611 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1612 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1613 return -1; 1614 } 1615 1616 if (!dev->intr_handle->intr_vec) { 1617 dev->intr_handle->intr_vec = 1618 rte_zmalloc("intr_vec", 1619 hw->max_queue_pairs * sizeof(int), 0); 1620 if (!dev->intr_handle->intr_vec) { 1621 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1622 hw->max_queue_pairs); 1623 return -ENOMEM; 1624 } 1625 } 1626 1627 /* Re-register callback to update max_intr */ 1628 rte_intr_callback_unregister(dev->intr_handle, 1629 virtio_interrupt_handler, 1630 dev); 1631 rte_intr_callback_register(dev->intr_handle, 1632 virtio_interrupt_handler, 1633 dev); 1634 1635 /* DO NOT try to remove this! This function will enable msix, or QEMU 1636 * will encounter SIGSEGV when DRIVER_OK is sent. 1637 * And for legacy devices, this should be done before queue/vec binding 1638 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1639 * (22) will be ignored. 1640 */ 1641 if (virtio_intr_enable(dev) < 0) { 1642 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1643 return -1; 1644 } 1645 1646 if (virtio_queues_bind_intr(dev) < 0) { 1647 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1648 return -1; 1649 } 1650 1651 return 0; 1652 } 1653 1654 /* reset device and renegotiate features if needed */ 1655 static int 1656 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1657 { 1658 struct virtio_hw *hw = eth_dev->data->dev_private; 1659 struct virtio_net_config *config; 1660 struct virtio_net_config local_config; 1661 struct rte_pci_device *pci_dev = NULL; 1662 int ret; 1663 1664 /* Reset the device although not necessary at startup */ 1665 vtpci_reset(hw); 1666 1667 if (hw->vqs) { 1668 virtio_dev_free_mbufs(eth_dev); 1669 virtio_free_queues(hw); 1670 } 1671 1672 /* Tell the host we've noticed this device. */ 1673 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1674 1675 /* Tell the host we've known how to drive the device. */ 1676 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1677 if (virtio_negotiate_features(hw, req_features) < 0) 1678 return -1; 1679 1680 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1681 1682 if (!hw->virtio_user_dev) 1683 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1684 1685 /* If host does not support both status and MSI-X then disable LSC */ 1686 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1687 hw->use_msix != VIRTIO_MSIX_NONE) 1688 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1689 else 1690 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1691 1692 /* Setting up rx_header size for the device */ 1693 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1694 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1695 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1696 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1697 else 1698 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1699 1700 /* Copy the permanent MAC address to: virtio_hw */ 1701 virtio_get_hwaddr(hw); 1702 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1703 ð_dev->data->mac_addrs[0]); 1704 PMD_INIT_LOG(DEBUG, 1705 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1706 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1707 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1708 1709 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1710 config = &local_config; 1711 1712 vtpci_read_dev_config(hw, 1713 offsetof(struct virtio_net_config, mac), 1714 &config->mac, sizeof(config->mac)); 1715 1716 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1717 vtpci_read_dev_config(hw, 1718 offsetof(struct virtio_net_config, status), 1719 &config->status, sizeof(config->status)); 1720 } else { 1721 PMD_INIT_LOG(DEBUG, 1722 "VIRTIO_NET_F_STATUS is not supported"); 1723 config->status = 0; 1724 } 1725 1726 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1727 vtpci_read_dev_config(hw, 1728 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1729 &config->max_virtqueue_pairs, 1730 sizeof(config->max_virtqueue_pairs)); 1731 } else { 1732 PMD_INIT_LOG(DEBUG, 1733 "VIRTIO_NET_F_MQ is not supported"); 1734 config->max_virtqueue_pairs = 1; 1735 } 1736 1737 hw->max_queue_pairs = config->max_virtqueue_pairs; 1738 1739 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1740 vtpci_read_dev_config(hw, 1741 offsetof(struct virtio_net_config, mtu), 1742 &config->mtu, 1743 sizeof(config->mtu)); 1744 1745 /* 1746 * MTU value has already been checked at negotiation 1747 * time, but check again in case it has changed since 1748 * then, which should not happen. 1749 */ 1750 if (config->mtu < RTE_ETHER_MIN_MTU) { 1751 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1752 config->mtu); 1753 return -1; 1754 } 1755 1756 hw->max_mtu = config->mtu; 1757 /* Set initial MTU to maximum one supported by vhost */ 1758 eth_dev->data->mtu = config->mtu; 1759 1760 } else { 1761 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1762 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1763 } 1764 1765 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1766 config->max_virtqueue_pairs); 1767 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1768 PMD_INIT_LOG(DEBUG, 1769 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1770 config->mac[0], config->mac[1], 1771 config->mac[2], config->mac[3], 1772 config->mac[4], config->mac[5]); 1773 } else { 1774 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1775 hw->max_queue_pairs = 1; 1776 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1777 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1778 } 1779 1780 ret = virtio_alloc_queues(eth_dev); 1781 if (ret < 0) 1782 return ret; 1783 1784 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1785 if (virtio_configure_intr(eth_dev) < 0) { 1786 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1787 virtio_free_queues(hw); 1788 return -1; 1789 } 1790 } 1791 1792 vtpci_reinit_complete(hw); 1793 1794 if (pci_dev) 1795 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1796 eth_dev->data->port_id, pci_dev->id.vendor_id, 1797 pci_dev->id.device_id); 1798 1799 return 0; 1800 } 1801 1802 /* 1803 * Remap the PCI device again (IO port map for legacy device and 1804 * memory map for modern device), so that the secondary process 1805 * could have the PCI initiated correctly. 1806 */ 1807 static int 1808 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1809 { 1810 if (hw->modern) { 1811 /* 1812 * We don't have to re-parse the PCI config space, since 1813 * rte_pci_map_device() makes sure the mapped address 1814 * in secondary process would equal to the one mapped in 1815 * the primary process: error will be returned if that 1816 * requirement is not met. 1817 * 1818 * That said, we could simply reuse all cap pointers 1819 * (such as dev_cfg, common_cfg, etc.) parsed from the 1820 * primary process, which is stored in shared memory. 1821 */ 1822 if (rte_pci_map_device(pci_dev)) { 1823 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1824 return -1; 1825 } 1826 } else { 1827 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1828 return -1; 1829 } 1830 1831 return 0; 1832 } 1833 1834 static void 1835 virtio_set_vtpci_ops(struct virtio_hw *hw) 1836 { 1837 #ifdef RTE_VIRTIO_USER 1838 if (hw->virtio_user_dev) 1839 VTPCI_OPS(hw) = &virtio_user_ops; 1840 else 1841 #endif 1842 if (hw->modern) 1843 VTPCI_OPS(hw) = &modern_ops; 1844 else 1845 VTPCI_OPS(hw) = &legacy_ops; 1846 } 1847 1848 /* 1849 * This function is based on probe() function in virtio_pci.c 1850 * It returns 0 on success. 1851 */ 1852 int 1853 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1854 { 1855 struct virtio_hw *hw = eth_dev->data->dev_private; 1856 int ret; 1857 1858 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1859 PMD_INIT_LOG(ERR, 1860 "Not sufficient headroom required = %d, avail = %d", 1861 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1862 RTE_PKTMBUF_HEADROOM); 1863 1864 return -1; 1865 } 1866 1867 eth_dev->dev_ops = &virtio_eth_dev_ops; 1868 1869 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1870 if (!hw->virtio_user_dev) { 1871 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1872 if (ret) 1873 return ret; 1874 } 1875 1876 virtio_set_vtpci_ops(hw); 1877 set_rxtx_funcs(eth_dev); 1878 1879 return 0; 1880 } 1881 1882 /* 1883 * Pass the information to the rte_eth_dev_close() that it should also 1884 * release the private port resources. 1885 */ 1886 eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE; 1887 1888 /* Allocate memory for storing MAC addresses */ 1889 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1890 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1891 if (eth_dev->data->mac_addrs == NULL) { 1892 PMD_INIT_LOG(ERR, 1893 "Failed to allocate %d bytes needed to store MAC addresses", 1894 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1895 return -ENOMEM; 1896 } 1897 1898 hw->port_id = eth_dev->data->port_id; 1899 /* For virtio_user case the hw->virtio_user_dev is populated by 1900 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1901 */ 1902 if (!hw->virtio_user_dev) { 1903 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1904 if (ret) 1905 goto err_vtpci_init; 1906 } 1907 1908 /* reset device and negotiate default features */ 1909 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1910 if (ret < 0) 1911 goto err_virtio_init; 1912 1913 hw->opened = true; 1914 1915 return 0; 1916 1917 err_virtio_init: 1918 if (!hw->virtio_user_dev) { 1919 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1920 if (!hw->modern) 1921 rte_pci_ioport_unmap(VTPCI_IO(hw)); 1922 } 1923 err_vtpci_init: 1924 rte_free(eth_dev->data->mac_addrs); 1925 eth_dev->data->mac_addrs = NULL; 1926 return ret; 1927 } 1928 1929 static int 1930 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1931 { 1932 PMD_INIT_FUNC_TRACE(); 1933 1934 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1935 return 0; 1936 1937 virtio_dev_stop(eth_dev); 1938 virtio_dev_close(eth_dev); 1939 1940 eth_dev->dev_ops = NULL; 1941 eth_dev->tx_pkt_burst = NULL; 1942 eth_dev->rx_pkt_burst = NULL; 1943 1944 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 1945 1946 return 0; 1947 } 1948 1949 static int vdpa_check_handler(__rte_unused const char *key, 1950 const char *value, __rte_unused void *opaque) 1951 { 1952 if (strcmp(value, "1")) 1953 return -1; 1954 1955 return 0; 1956 } 1957 1958 static int 1959 vdpa_mode_selected(struct rte_devargs *devargs) 1960 { 1961 struct rte_kvargs *kvlist; 1962 const char *key = "vdpa"; 1963 int ret = 0; 1964 1965 if (devargs == NULL) 1966 return 0; 1967 1968 kvlist = rte_kvargs_parse(devargs->args, NULL); 1969 if (kvlist == NULL) 1970 return 0; 1971 1972 if (!rte_kvargs_count(kvlist, key)) 1973 goto exit; 1974 1975 /* vdpa mode selected when there's a key-value pair: vdpa=1 */ 1976 if (rte_kvargs_process(kvlist, key, 1977 vdpa_check_handler, NULL) < 0) { 1978 goto exit; 1979 } 1980 ret = 1; 1981 1982 exit: 1983 rte_kvargs_free(kvlist); 1984 return ret; 1985 } 1986 1987 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1988 struct rte_pci_device *pci_dev) 1989 { 1990 if (rte_eal_iopl_init() != 0) { 1991 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); 1992 return 1; 1993 } 1994 1995 /* virtio pmd skips probe if device needs to work in vdpa mode */ 1996 if (vdpa_mode_selected(pci_dev->device.devargs)) 1997 return 1; 1998 1999 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 2000 eth_virtio_dev_init); 2001 } 2002 2003 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 2004 { 2005 int ret; 2006 2007 ret = rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 2008 /* Port has already been released by close. */ 2009 if (ret == -ENODEV) 2010 ret = 0; 2011 return ret; 2012 } 2013 2014 static struct rte_pci_driver rte_virtio_pmd = { 2015 .driver = { 2016 .name = "net_virtio", 2017 }, 2018 .id_table = pci_id_virtio_map, 2019 .drv_flags = 0, 2020 .probe = eth_virtio_pci_probe, 2021 .remove = eth_virtio_pci_remove, 2022 }; 2023 2024 RTE_INIT(rte_virtio_pmd_init) 2025 { 2026 rte_eal_iopl_init(); 2027 rte_pci_register(&rte_virtio_pmd); 2028 } 2029 2030 static bool 2031 rx_offload_enabled(struct virtio_hw *hw) 2032 { 2033 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2034 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2035 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2036 } 2037 2038 static bool 2039 tx_offload_enabled(struct virtio_hw *hw) 2040 { 2041 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 2042 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2043 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2044 } 2045 2046 /* 2047 * Configure virtio device 2048 * It returns 0 on success. 2049 */ 2050 static int 2051 virtio_dev_configure(struct rte_eth_dev *dev) 2052 { 2053 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2054 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2055 struct virtio_hw *hw = dev->data->dev_private; 2056 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2057 hw->vtnet_hdr_size; 2058 uint64_t rx_offloads = rxmode->offloads; 2059 uint64_t tx_offloads = txmode->offloads; 2060 uint64_t req_features; 2061 int ret; 2062 2063 PMD_INIT_LOG(DEBUG, "configure"); 2064 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2065 2066 if (dev->data->dev_conf.intr_conf.rxq) { 2067 ret = virtio_init_device(dev, hw->req_guest_features); 2068 if (ret < 0) 2069 return ret; 2070 } 2071 2072 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2073 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2074 2075 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2076 DEV_RX_OFFLOAD_TCP_CKSUM)) 2077 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2078 2079 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2080 req_features |= 2081 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2082 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2083 2084 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2085 DEV_TX_OFFLOAD_TCP_CKSUM)) 2086 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2087 2088 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2089 req_features |= 2090 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2091 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2092 2093 /* if request features changed, reinit the device */ 2094 if (req_features != hw->req_guest_features) { 2095 ret = virtio_init_device(dev, req_features); 2096 if (ret < 0) 2097 return ret; 2098 } 2099 2100 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2101 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2102 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2103 PMD_DRV_LOG(ERR, 2104 "rx checksum not available on this host"); 2105 return -ENOTSUP; 2106 } 2107 2108 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2109 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2110 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2111 PMD_DRV_LOG(ERR, 2112 "Large Receive Offload not available on this host"); 2113 return -ENOTSUP; 2114 } 2115 2116 /* start control queue */ 2117 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2118 virtio_dev_cq_start(dev); 2119 2120 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2121 hw->vlan_strip = 1; 2122 2123 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2124 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2125 PMD_DRV_LOG(ERR, 2126 "vlan filtering not available on this host"); 2127 return -ENOTSUP; 2128 } 2129 2130 hw->has_tx_offload = tx_offload_enabled(hw); 2131 hw->has_rx_offload = rx_offload_enabled(hw); 2132 2133 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2134 /* Enable vector (0) for Link State Intrerrupt */ 2135 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2136 VIRTIO_MSI_NO_VECTOR) { 2137 PMD_DRV_LOG(ERR, "failed to set config vector"); 2138 return -EBUSY; 2139 } 2140 2141 rte_spinlock_init(&hw->state_lock); 2142 2143 hw->use_simple_rx = 1; 2144 2145 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2146 hw->use_inorder_tx = 1; 2147 hw->use_inorder_rx = 1; 2148 hw->use_simple_rx = 0; 2149 } 2150 2151 if (vtpci_packed_queue(hw)) { 2152 hw->use_simple_rx = 0; 2153 hw->use_inorder_rx = 0; 2154 } 2155 2156 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2157 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2158 hw->use_simple_rx = 0; 2159 } 2160 #endif 2161 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2162 hw->use_simple_rx = 0; 2163 } 2164 2165 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2166 DEV_RX_OFFLOAD_TCP_CKSUM | 2167 DEV_RX_OFFLOAD_TCP_LRO | 2168 DEV_RX_OFFLOAD_VLAN_STRIP)) 2169 hw->use_simple_rx = 0; 2170 2171 return 0; 2172 } 2173 2174 2175 static int 2176 virtio_dev_start(struct rte_eth_dev *dev) 2177 { 2178 uint16_t nb_queues, i; 2179 struct virtnet_rx *rxvq; 2180 struct virtnet_tx *txvq __rte_unused; 2181 struct virtio_hw *hw = dev->data->dev_private; 2182 int ret; 2183 2184 /* Finish the initialization of the queues */ 2185 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2186 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2187 if (ret < 0) 2188 return ret; 2189 } 2190 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2191 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2192 if (ret < 0) 2193 return ret; 2194 } 2195 2196 /* check if lsc interrupt feature is enabled */ 2197 if (dev->data->dev_conf.intr_conf.lsc) { 2198 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2199 PMD_DRV_LOG(ERR, "link status not supported by host"); 2200 return -ENOTSUP; 2201 } 2202 } 2203 2204 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2205 * in device configure, but it could be unmapped when device is 2206 * stopped. 2207 */ 2208 if (dev->data->dev_conf.intr_conf.lsc || 2209 dev->data->dev_conf.intr_conf.rxq) { 2210 virtio_intr_disable(dev); 2211 2212 /* Setup interrupt callback */ 2213 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2214 rte_intr_callback_register(dev->intr_handle, 2215 virtio_interrupt_handler, 2216 dev); 2217 2218 if (virtio_intr_enable(dev) < 0) { 2219 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2220 return -EIO; 2221 } 2222 } 2223 2224 /*Notify the backend 2225 *Otherwise the tap backend might already stop its queue due to fullness. 2226 *vhost backend will have no chance to be waked up 2227 */ 2228 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2229 if (hw->max_queue_pairs > 1) { 2230 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2231 return -EINVAL; 2232 } 2233 2234 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2235 2236 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2237 rxvq = dev->data->rx_queues[i]; 2238 /* Flush the old packets */ 2239 virtqueue_rxvq_flush(rxvq->vq); 2240 virtqueue_notify(rxvq->vq); 2241 } 2242 2243 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2244 txvq = dev->data->tx_queues[i]; 2245 virtqueue_notify(txvq->vq); 2246 } 2247 2248 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2249 2250 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2251 rxvq = dev->data->rx_queues[i]; 2252 VIRTQUEUE_DUMP(rxvq->vq); 2253 } 2254 2255 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2256 txvq = dev->data->tx_queues[i]; 2257 VIRTQUEUE_DUMP(txvq->vq); 2258 } 2259 2260 set_rxtx_funcs(dev); 2261 hw->started = true; 2262 2263 /* Initialize Link state */ 2264 virtio_dev_link_update(dev, 0); 2265 2266 return 0; 2267 } 2268 2269 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2270 { 2271 struct virtio_hw *hw = dev->data->dev_private; 2272 uint16_t nr_vq = virtio_get_nr_vq(hw); 2273 const char *type __rte_unused; 2274 unsigned int i, mbuf_num = 0; 2275 struct virtqueue *vq; 2276 struct rte_mbuf *buf; 2277 int queue_type; 2278 2279 if (hw->vqs == NULL) 2280 return; 2281 2282 for (i = 0; i < nr_vq; i++) { 2283 vq = hw->vqs[i]; 2284 if (!vq) 2285 continue; 2286 2287 queue_type = virtio_get_queue_type(hw, i); 2288 if (queue_type == VTNET_RQ) 2289 type = "rxq"; 2290 else if (queue_type == VTNET_TQ) 2291 type = "txq"; 2292 else 2293 continue; 2294 2295 PMD_INIT_LOG(DEBUG, 2296 "Before freeing %s[%d] used and unused buf", 2297 type, i); 2298 VIRTQUEUE_DUMP(vq); 2299 2300 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2301 rte_pktmbuf_free(buf); 2302 mbuf_num++; 2303 } 2304 2305 PMD_INIT_LOG(DEBUG, 2306 "After freeing %s[%d] used and unused buf", 2307 type, i); 2308 VIRTQUEUE_DUMP(vq); 2309 } 2310 2311 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2312 } 2313 2314 /* 2315 * Stop device: disable interrupt and mark link down 2316 */ 2317 static void 2318 virtio_dev_stop(struct rte_eth_dev *dev) 2319 { 2320 struct virtio_hw *hw = dev->data->dev_private; 2321 struct rte_eth_link link; 2322 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2323 2324 PMD_INIT_LOG(DEBUG, "stop"); 2325 2326 rte_spinlock_lock(&hw->state_lock); 2327 if (!hw->started) 2328 goto out_unlock; 2329 hw->started = false; 2330 2331 if (intr_conf->lsc || intr_conf->rxq) { 2332 virtio_intr_disable(dev); 2333 2334 /* Reset interrupt callback */ 2335 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2336 rte_intr_callback_unregister(dev->intr_handle, 2337 virtio_interrupt_handler, 2338 dev); 2339 } 2340 } 2341 2342 memset(&link, 0, sizeof(link)); 2343 rte_eth_linkstatus_set(dev, &link); 2344 out_unlock: 2345 rte_spinlock_unlock(&hw->state_lock); 2346 } 2347 2348 static int 2349 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2350 { 2351 struct rte_eth_link link; 2352 uint16_t status; 2353 struct virtio_hw *hw = dev->data->dev_private; 2354 2355 memset(&link, 0, sizeof(link)); 2356 link.link_duplex = ETH_LINK_FULL_DUPLEX; 2357 link.link_speed = ETH_SPEED_NUM_10G; 2358 link.link_autoneg = ETH_LINK_FIXED; 2359 2360 if (!hw->started) { 2361 link.link_status = ETH_LINK_DOWN; 2362 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2363 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2364 vtpci_read_dev_config(hw, 2365 offsetof(struct virtio_net_config, status), 2366 &status, sizeof(status)); 2367 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2368 link.link_status = ETH_LINK_DOWN; 2369 PMD_INIT_LOG(DEBUG, "Port %d is down", 2370 dev->data->port_id); 2371 } else { 2372 link.link_status = ETH_LINK_UP; 2373 PMD_INIT_LOG(DEBUG, "Port %d is up", 2374 dev->data->port_id); 2375 } 2376 } else { 2377 link.link_status = ETH_LINK_UP; 2378 } 2379 2380 return rte_eth_linkstatus_set(dev, &link); 2381 } 2382 2383 static int 2384 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2385 { 2386 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2387 struct virtio_hw *hw = dev->data->dev_private; 2388 uint64_t offloads = rxmode->offloads; 2389 2390 if (mask & ETH_VLAN_FILTER_MASK) { 2391 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2392 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2393 2394 PMD_DRV_LOG(NOTICE, 2395 "vlan filtering not available on this host"); 2396 2397 return -ENOTSUP; 2398 } 2399 } 2400 2401 if (mask & ETH_VLAN_STRIP_MASK) 2402 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2403 2404 return 0; 2405 } 2406 2407 static int 2408 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2409 { 2410 uint64_t tso_mask, host_features; 2411 struct virtio_hw *hw = dev->data->dev_private; 2412 2413 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ 2414 2415 dev_info->max_rx_queues = 2416 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2417 dev_info->max_tx_queues = 2418 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2419 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2420 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2421 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2422 2423 host_features = VTPCI_OPS(hw)->get_features(hw); 2424 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2425 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2426 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2427 dev_info->rx_offload_capa |= 2428 DEV_RX_OFFLOAD_TCP_CKSUM | 2429 DEV_RX_OFFLOAD_UDP_CKSUM; 2430 } 2431 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2432 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2433 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2434 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2435 if ((host_features & tso_mask) == tso_mask) 2436 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2437 2438 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2439 DEV_TX_OFFLOAD_VLAN_INSERT; 2440 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2441 dev_info->tx_offload_capa |= 2442 DEV_TX_OFFLOAD_UDP_CKSUM | 2443 DEV_TX_OFFLOAD_TCP_CKSUM; 2444 } 2445 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2446 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2447 if ((host_features & tso_mask) == tso_mask) 2448 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2449 2450 return 0; 2451 } 2452 2453 /* 2454 * It enables testpmd to collect per queue stats. 2455 */ 2456 static int 2457 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2458 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2459 __rte_unused uint8_t is_rx) 2460 { 2461 return 0; 2462 } 2463 2464 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2465 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2466 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2467 2468 RTE_INIT(virtio_init_log) 2469 { 2470 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2471 if (virtio_logtype_init >= 0) 2472 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2473 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2474 if (virtio_logtype_driver >= 0) 2475 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2476 } 2477