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 <ethdev_driver.h> 12 #include <rte_memcpy.h> 13 #include <rte_string_fns.h> 14 #include <rte_memzone.h> 15 #include <rte_malloc.h> 16 #include <rte_branch_prediction.h> 17 #include <rte_ether.h> 18 #include <rte_ip.h> 19 #include <rte_arp.h> 20 #include <rte_common.h> 21 #include <rte_errno.h> 22 #include <rte_cpuflags.h> 23 #include <rte_vect.h> 24 #include <rte_memory.h> 25 #include <rte_eal_paging.h> 26 #include <rte_eal.h> 27 #include <rte_dev.h> 28 #include <rte_cycles.h> 29 #include <rte_kvargs.h> 30 31 #include "virtio_ethdev.h" 32 #include "virtio.h" 33 #include "virtio_logs.h" 34 #include "virtqueue.h" 35 #include "virtio_rxtx.h" 36 #include "virtio_user/virtio_user_dev.h" 37 38 static int virtio_dev_configure(struct rte_eth_dev *dev); 39 static int virtio_dev_start(struct rte_eth_dev *dev); 40 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev); 41 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev); 42 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 43 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 44 static uint32_t virtio_dev_speed_capa_get(uint32_t speed); 45 static int virtio_dev_devargs_parse(struct rte_devargs *devargs, 46 uint32_t *speed, 47 int *vectorized); 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 static void virtio_notify_peers(struct rte_eth_dev *dev); 84 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 85 86 struct rte_virtio_xstats_name_off { 87 char name[RTE_ETH_XSTATS_NAME_SIZE]; 88 unsigned offset; 89 }; 90 91 /* [rt]x_qX_ is prepended to the name string here */ 92 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 93 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 94 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 95 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 96 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 97 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 98 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 99 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 100 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 101 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 102 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 103 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 104 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 105 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 106 }; 107 108 /* [rt]x_qX_ is prepended to the name string here */ 109 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 110 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 111 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 112 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 113 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 114 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 115 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 116 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 117 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 118 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 119 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 120 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 121 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 122 }; 123 124 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 125 sizeof(rte_virtio_rxq_stat_strings[0])) 126 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 127 sizeof(rte_virtio_txq_stat_strings[0])) 128 129 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 130 131 static struct virtio_pmd_ctrl * 132 virtio_send_command_packed(struct virtnet_ctl *cvq, 133 struct virtio_pmd_ctrl *ctrl, 134 int *dlen, int pkt_num) 135 { 136 struct virtqueue *vq = virtnet_cq_to_vq(cvq); 137 int head; 138 struct vring_packed_desc *desc = vq->vq_packed.ring.desc; 139 struct virtio_pmd_ctrl *result; 140 uint16_t flags; 141 int sum = 0; 142 int nb_descs = 0; 143 int k; 144 145 /* 146 * Format is enforced in qemu code: 147 * One TX packet for header; 148 * At least one TX packet per argument; 149 * One RX packet for ACK. 150 */ 151 head = vq->vq_avail_idx; 152 flags = vq->vq_packed.cached_flags; 153 desc[head].addr = cvq->virtio_net_hdr_mem; 154 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 155 vq->vq_free_cnt--; 156 nb_descs++; 157 if (++vq->vq_avail_idx >= vq->vq_nentries) { 158 vq->vq_avail_idx -= vq->vq_nentries; 159 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 160 } 161 162 for (k = 0; k < pkt_num; k++) { 163 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 164 + sizeof(struct virtio_net_ctrl_hdr) 165 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 166 desc[vq->vq_avail_idx].len = dlen[k]; 167 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT | 168 vq->vq_packed.cached_flags; 169 sum += dlen[k]; 170 vq->vq_free_cnt--; 171 nb_descs++; 172 if (++vq->vq_avail_idx >= vq->vq_nentries) { 173 vq->vq_avail_idx -= vq->vq_nentries; 174 vq->vq_packed.cached_flags ^= 175 VRING_PACKED_DESC_F_AVAIL_USED; 176 } 177 } 178 179 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 180 + sizeof(struct virtio_net_ctrl_hdr); 181 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 182 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE | 183 vq->vq_packed.cached_flags; 184 vq->vq_free_cnt--; 185 nb_descs++; 186 if (++vq->vq_avail_idx >= vq->vq_nentries) { 187 vq->vq_avail_idx -= vq->vq_nentries; 188 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 189 } 190 191 virtqueue_store_flags_packed(&desc[head], VRING_DESC_F_NEXT | flags, 192 vq->hw->weak_barriers); 193 194 virtio_wmb(vq->hw->weak_barriers); 195 virtqueue_notify(vq); 196 197 /* wait for used desc in virtqueue 198 * desc_is_used has a load-acquire or rte_io_rmb inside 199 */ 200 while (!desc_is_used(&desc[head], vq)) 201 usleep(100); 202 203 /* now get used descriptors */ 204 vq->vq_free_cnt += nb_descs; 205 vq->vq_used_cons_idx += nb_descs; 206 if (vq->vq_used_cons_idx >= vq->vq_nentries) { 207 vq->vq_used_cons_idx -= vq->vq_nentries; 208 vq->vq_packed.used_wrap_counter ^= 1; 209 } 210 211 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n" 212 "vq->vq_avail_idx=%d\n" 213 "vq->vq_used_cons_idx=%d\n" 214 "vq->vq_packed.cached_flags=0x%x\n" 215 "vq->vq_packed.used_wrap_counter=%d\n", 216 vq->vq_free_cnt, 217 vq->vq_avail_idx, 218 vq->vq_used_cons_idx, 219 vq->vq_packed.cached_flags, 220 vq->vq_packed.used_wrap_counter); 221 222 result = cvq->virtio_net_hdr_mz->addr; 223 return result; 224 } 225 226 static struct virtio_pmd_ctrl * 227 virtio_send_command_split(struct virtnet_ctl *cvq, 228 struct virtio_pmd_ctrl *ctrl, 229 int *dlen, int pkt_num) 230 { 231 struct virtio_pmd_ctrl *result; 232 struct virtqueue *vq = virtnet_cq_to_vq(cvq); 233 uint32_t head, i; 234 int k, sum = 0; 235 236 head = vq->vq_desc_head_idx; 237 238 /* 239 * Format is enforced in qemu code: 240 * One TX packet for header; 241 * At least one TX packet per argument; 242 * One RX packet for ACK. 243 */ 244 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT; 245 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem; 246 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 247 vq->vq_free_cnt--; 248 i = vq->vq_split.ring.desc[head].next; 249 250 for (k = 0; k < pkt_num; k++) { 251 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT; 252 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 253 + sizeof(struct virtio_net_ctrl_hdr) 254 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 255 vq->vq_split.ring.desc[i].len = dlen[k]; 256 sum += dlen[k]; 257 vq->vq_free_cnt--; 258 i = vq->vq_split.ring.desc[i].next; 259 } 260 261 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE; 262 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 263 + sizeof(struct virtio_net_ctrl_hdr); 264 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status); 265 vq->vq_free_cnt--; 266 267 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next; 268 269 vq_update_avail_ring(vq, head); 270 vq_update_avail_idx(vq); 271 272 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 273 274 virtqueue_notify(vq); 275 276 while (virtqueue_nused(vq) == 0) 277 usleep(100); 278 279 while (virtqueue_nused(vq)) { 280 uint32_t idx, desc_idx, used_idx; 281 struct vring_used_elem *uep; 282 283 used_idx = (uint32_t)(vq->vq_used_cons_idx 284 & (vq->vq_nentries - 1)); 285 uep = &vq->vq_split.ring.used->ring[used_idx]; 286 idx = (uint32_t) uep->id; 287 desc_idx = idx; 288 289 while (vq->vq_split.ring.desc[desc_idx].flags & 290 VRING_DESC_F_NEXT) { 291 desc_idx = vq->vq_split.ring.desc[desc_idx].next; 292 vq->vq_free_cnt++; 293 } 294 295 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx; 296 vq->vq_desc_head_idx = idx; 297 298 vq->vq_used_cons_idx++; 299 vq->vq_free_cnt++; 300 } 301 302 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 303 vq->vq_free_cnt, vq->vq_desc_head_idx); 304 305 result = cvq->virtio_net_hdr_mz->addr; 306 return result; 307 } 308 309 static int 310 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 311 int *dlen, int pkt_num) 312 { 313 virtio_net_ctrl_ack status = ~0; 314 struct virtio_pmd_ctrl *result; 315 struct virtqueue *vq; 316 317 ctrl->status = status; 318 319 if (!cvq) { 320 PMD_INIT_LOG(ERR, "Control queue is not supported."); 321 return -1; 322 } 323 324 rte_spinlock_lock(&cvq->lock); 325 vq = virtnet_cq_to_vq(cvq); 326 327 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 328 "vq->hw->cvq = %p vq = %p", 329 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 330 331 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 332 rte_spinlock_unlock(&cvq->lock); 333 return -1; 334 } 335 336 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 337 sizeof(struct virtio_pmd_ctrl)); 338 339 if (virtio_with_packed_queue(vq->hw)) 340 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num); 341 else 342 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num); 343 344 rte_spinlock_unlock(&cvq->lock); 345 return result->status; 346 } 347 348 static int 349 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 350 { 351 struct virtio_hw *hw = dev->data->dev_private; 352 struct virtio_pmd_ctrl ctrl; 353 int dlen[1]; 354 int ret; 355 356 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 357 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 358 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 359 360 dlen[0] = sizeof(uint16_t); 361 362 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 363 if (ret) { 364 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 365 "failed, this is too late now..."); 366 return -EINVAL; 367 } 368 369 return 0; 370 } 371 372 static void 373 virtio_dev_queue_release(void *queue __rte_unused) 374 { 375 /* do nothing */ 376 } 377 378 static uint16_t 379 virtio_get_nr_vq(struct virtio_hw *hw) 380 { 381 uint16_t nr_vq = hw->max_queue_pairs * 2; 382 383 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 384 nr_vq += 1; 385 386 return nr_vq; 387 } 388 389 static void 390 virtio_init_vring(struct virtqueue *vq) 391 { 392 int size = vq->vq_nentries; 393 uint8_t *ring_mem = vq->vq_ring_virt_mem; 394 395 PMD_INIT_FUNC_TRACE(); 396 397 memset(ring_mem, 0, vq->vq_ring_size); 398 399 vq->vq_used_cons_idx = 0; 400 vq->vq_desc_head_idx = 0; 401 vq->vq_avail_idx = 0; 402 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 403 vq->vq_free_cnt = vq->vq_nentries; 404 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 405 if (virtio_with_packed_queue(vq->hw)) { 406 vring_init_packed(&vq->vq_packed.ring, ring_mem, 407 VIRTIO_VRING_ALIGN, size); 408 vring_desc_init_packed(vq, size); 409 } else { 410 struct vring *vr = &vq->vq_split.ring; 411 412 vring_init_split(vr, ring_mem, VIRTIO_VRING_ALIGN, size); 413 vring_desc_init_split(vr->desc, size); 414 } 415 /* 416 * Disable device(host) interrupting guest 417 */ 418 virtqueue_disable_intr(vq); 419 } 420 421 static int 422 virtio_init_queue(struct rte_eth_dev *dev, uint16_t queue_idx) 423 { 424 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 425 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 426 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 427 unsigned int vq_size, size; 428 struct virtio_hw *hw = dev->data->dev_private; 429 struct virtnet_rx *rxvq = NULL; 430 struct virtnet_tx *txvq = NULL; 431 struct virtnet_ctl *cvq = NULL; 432 struct virtqueue *vq; 433 size_t sz_hdr_mz = 0; 434 void *sw_ring = NULL; 435 int queue_type = virtio_get_queue_type(hw, queue_idx); 436 int ret; 437 int numa_node = dev->device->numa_node; 438 struct rte_mbuf *fake_mbuf = NULL; 439 440 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 441 queue_idx, numa_node); 442 443 /* 444 * Read the virtqueue size from the Queue Size field 445 * Always power of 2 and if 0 virtqueue does not exist 446 */ 447 vq_size = VIRTIO_OPS(hw)->get_queue_num(hw, queue_idx); 448 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 449 if (vq_size == 0) { 450 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 451 return -EINVAL; 452 } 453 454 if (!virtio_with_packed_queue(hw) && !rte_is_power_of_2(vq_size)) { 455 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2"); 456 return -EINVAL; 457 } 458 459 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 460 dev->data->port_id, queue_idx); 461 462 size = RTE_ALIGN_CEIL(sizeof(*vq) + 463 vq_size * sizeof(struct vq_desc_extra), 464 RTE_CACHE_LINE_SIZE); 465 if (queue_type == VTNET_TQ) { 466 /* 467 * For each xmit packet, allocate a virtio_net_hdr 468 * and indirect ring elements 469 */ 470 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 471 } else if (queue_type == VTNET_CQ) { 472 /* Allocate a page for control vq command, data and status */ 473 sz_hdr_mz = rte_mem_page_size(); 474 } 475 476 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 477 numa_node); 478 if (vq == NULL) { 479 PMD_INIT_LOG(ERR, "can not allocate vq"); 480 return -ENOMEM; 481 } 482 hw->vqs[queue_idx] = vq; 483 484 vq->hw = hw; 485 vq->vq_queue_index = queue_idx; 486 vq->vq_nentries = vq_size; 487 if (virtio_with_packed_queue(hw)) { 488 vq->vq_packed.used_wrap_counter = 1; 489 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL; 490 vq->vq_packed.event_flags_shadow = 0; 491 if (queue_type == VTNET_RQ) 492 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE; 493 } 494 495 /* 496 * Reserve a memzone for vring elements 497 */ 498 size = vring_size(hw, vq_size, VIRTIO_VRING_ALIGN); 499 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_VRING_ALIGN); 500 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 501 size, vq->vq_ring_size); 502 503 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 504 numa_node, RTE_MEMZONE_IOVA_CONTIG, 505 VIRTIO_VRING_ALIGN); 506 if (mz == NULL) { 507 if (rte_errno == EEXIST) 508 mz = rte_memzone_lookup(vq_name); 509 if (mz == NULL) { 510 ret = -ENOMEM; 511 goto free_vq; 512 } 513 } 514 515 memset(mz->addr, 0, mz->len); 516 517 vq->vq_ring_mem = mz->iova; 518 vq->vq_ring_virt_mem = mz->addr; 519 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 520 (uint64_t)mz->iova); 521 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 522 (uint64_t)(uintptr_t)mz->addr); 523 524 virtio_init_vring(vq); 525 526 if (sz_hdr_mz) { 527 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 528 dev->data->port_id, queue_idx); 529 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 530 numa_node, RTE_MEMZONE_IOVA_CONTIG, 531 RTE_CACHE_LINE_SIZE); 532 if (hdr_mz == NULL) { 533 if (rte_errno == EEXIST) 534 hdr_mz = rte_memzone_lookup(vq_hdr_name); 535 if (hdr_mz == NULL) { 536 ret = -ENOMEM; 537 goto free_mz; 538 } 539 } 540 } 541 542 if (queue_type == VTNET_RQ) { 543 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 544 sizeof(vq->sw_ring[0]); 545 546 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 547 RTE_CACHE_LINE_SIZE, numa_node); 548 if (!sw_ring) { 549 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 550 ret = -ENOMEM; 551 goto free_hdr_mz; 552 } 553 554 fake_mbuf = rte_zmalloc_socket("sw_ring", sizeof(*fake_mbuf), 555 RTE_CACHE_LINE_SIZE, numa_node); 556 if (!fake_mbuf) { 557 PMD_INIT_LOG(ERR, "can not allocate fake mbuf"); 558 ret = -ENOMEM; 559 goto free_sw_ring; 560 } 561 562 vq->sw_ring = sw_ring; 563 rxvq = &vq->rxq; 564 rxvq->port_id = dev->data->port_id; 565 rxvq->mz = mz; 566 rxvq->fake_mbuf = fake_mbuf; 567 } else if (queue_type == VTNET_TQ) { 568 txvq = &vq->txq; 569 txvq->port_id = dev->data->port_id; 570 txvq->mz = mz; 571 txvq->virtio_net_hdr_mz = hdr_mz; 572 txvq->virtio_net_hdr_mem = hdr_mz->iova; 573 } else if (queue_type == VTNET_CQ) { 574 cvq = &vq->cq; 575 cvq->mz = mz; 576 cvq->virtio_net_hdr_mz = hdr_mz; 577 cvq->virtio_net_hdr_mem = hdr_mz->iova; 578 memset(cvq->virtio_net_hdr_mz->addr, 0, rte_mem_page_size()); 579 580 hw->cvq = cvq; 581 } 582 583 if (queue_type == VTNET_TQ) { 584 struct virtio_tx_region *txr; 585 unsigned int i; 586 587 txr = hdr_mz->addr; 588 memset(txr, 0, vq_size * sizeof(*txr)); 589 for (i = 0; i < vq_size; i++) { 590 /* first indirect descriptor is always the tx header */ 591 if (!virtio_with_packed_queue(hw)) { 592 struct vring_desc *start_dp = txr[i].tx_indir; 593 vring_desc_init_split(start_dp, 594 RTE_DIM(txr[i].tx_indir)); 595 start_dp->addr = txvq->virtio_net_hdr_mem 596 + i * sizeof(*txr) 597 + offsetof(struct virtio_tx_region, 598 tx_hdr); 599 start_dp->len = hw->vtnet_hdr_size; 600 start_dp->flags = VRING_DESC_F_NEXT; 601 } else { 602 struct vring_packed_desc *start_dp = 603 txr[i].tx_packed_indir; 604 vring_desc_init_indirect_packed(start_dp, 605 RTE_DIM(txr[i].tx_packed_indir)); 606 start_dp->addr = txvq->virtio_net_hdr_mem 607 + i * sizeof(*txr) 608 + offsetof(struct virtio_tx_region, 609 tx_hdr); 610 start_dp->len = hw->vtnet_hdr_size; 611 } 612 } 613 } 614 615 if (VIRTIO_OPS(hw)->setup_queue(hw, vq) < 0) { 616 PMD_INIT_LOG(ERR, "setup_queue failed"); 617 ret = -EINVAL; 618 goto clean_vq; 619 } 620 621 return 0; 622 623 clean_vq: 624 hw->cvq = NULL; 625 rte_free(fake_mbuf); 626 free_sw_ring: 627 rte_free(sw_ring); 628 free_hdr_mz: 629 rte_memzone_free(hdr_mz); 630 free_mz: 631 rte_memzone_free(mz); 632 free_vq: 633 rte_free(vq); 634 635 return ret; 636 } 637 638 static void 639 virtio_free_queues(struct virtio_hw *hw) 640 { 641 uint16_t nr_vq = virtio_get_nr_vq(hw); 642 struct virtqueue *vq; 643 int queue_type; 644 uint16_t i; 645 646 if (hw->vqs == NULL) 647 return; 648 649 for (i = 0; i < nr_vq; i++) { 650 vq = hw->vqs[i]; 651 if (!vq) 652 continue; 653 654 queue_type = virtio_get_queue_type(hw, i); 655 if (queue_type == VTNET_RQ) { 656 rte_free(vq->rxq.fake_mbuf); 657 rte_free(vq->sw_ring); 658 rte_memzone_free(vq->rxq.mz); 659 } else if (queue_type == VTNET_TQ) { 660 rte_memzone_free(vq->txq.mz); 661 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 662 } else { 663 rte_memzone_free(vq->cq.mz); 664 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 665 } 666 667 rte_free(vq); 668 hw->vqs[i] = NULL; 669 } 670 671 rte_free(hw->vqs); 672 hw->vqs = NULL; 673 } 674 675 static int 676 virtio_alloc_queues(struct rte_eth_dev *dev) 677 { 678 struct virtio_hw *hw = dev->data->dev_private; 679 uint16_t nr_vq = virtio_get_nr_vq(hw); 680 uint16_t i; 681 int ret; 682 683 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 684 if (!hw->vqs) { 685 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 686 return -ENOMEM; 687 } 688 689 for (i = 0; i < nr_vq; i++) { 690 ret = virtio_init_queue(dev, i); 691 if (ret < 0) { 692 virtio_free_queues(hw); 693 return ret; 694 } 695 } 696 697 return 0; 698 } 699 700 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 701 702 int 703 virtio_dev_close(struct rte_eth_dev *dev) 704 { 705 struct virtio_hw *hw = dev->data->dev_private; 706 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 707 708 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 709 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 710 return 0; 711 712 if (!hw->opened) 713 return 0; 714 hw->opened = 0; 715 716 /* reset the NIC */ 717 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 718 VIRTIO_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 719 if (intr_conf->rxq) 720 virtio_queues_unbind_intr(dev); 721 722 if (intr_conf->lsc || intr_conf->rxq) { 723 virtio_intr_disable(dev); 724 rte_intr_efd_disable(dev->intr_handle); 725 rte_free(dev->intr_handle->intr_vec); 726 dev->intr_handle->intr_vec = NULL; 727 } 728 729 virtio_reset(hw); 730 virtio_dev_free_mbufs(dev); 731 virtio_free_queues(hw); 732 733 return VIRTIO_OPS(hw)->dev_close(hw); 734 } 735 736 static int 737 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 738 { 739 struct virtio_hw *hw = dev->data->dev_private; 740 struct virtio_pmd_ctrl ctrl; 741 int dlen[1]; 742 int ret; 743 744 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 745 PMD_INIT_LOG(INFO, "host does not support rx control"); 746 return -ENOTSUP; 747 } 748 749 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 750 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 751 ctrl.data[0] = 1; 752 dlen[0] = 1; 753 754 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 755 if (ret) { 756 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 757 return -EAGAIN; 758 } 759 760 return 0; 761 } 762 763 static int 764 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 765 { 766 struct virtio_hw *hw = dev->data->dev_private; 767 struct virtio_pmd_ctrl ctrl; 768 int dlen[1]; 769 int ret; 770 771 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 772 PMD_INIT_LOG(INFO, "host does not support rx control"); 773 return -ENOTSUP; 774 } 775 776 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 777 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 778 ctrl.data[0] = 0; 779 dlen[0] = 1; 780 781 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 782 if (ret) { 783 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 784 return -EAGAIN; 785 } 786 787 return 0; 788 } 789 790 static int 791 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 792 { 793 struct virtio_hw *hw = dev->data->dev_private; 794 struct virtio_pmd_ctrl ctrl; 795 int dlen[1]; 796 int ret; 797 798 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 799 PMD_INIT_LOG(INFO, "host does not support rx control"); 800 return -ENOTSUP; 801 } 802 803 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 804 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 805 ctrl.data[0] = 1; 806 dlen[0] = 1; 807 808 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 809 if (ret) { 810 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 811 return -EAGAIN; 812 } 813 814 return 0; 815 } 816 817 static int 818 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 819 { 820 struct virtio_hw *hw = dev->data->dev_private; 821 struct virtio_pmd_ctrl ctrl; 822 int dlen[1]; 823 int ret; 824 825 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 826 PMD_INIT_LOG(INFO, "host does not support rx control"); 827 return -ENOTSUP; 828 } 829 830 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 831 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 832 ctrl.data[0] = 0; 833 dlen[0] = 1; 834 835 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 836 if (ret) { 837 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 838 return -EAGAIN; 839 } 840 841 return 0; 842 } 843 844 uint16_t 845 virtio_rx_mem_pool_buf_size(struct rte_mempool *mp) 846 { 847 return rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM; 848 } 849 850 bool 851 virtio_rx_check_scatter(uint16_t max_rx_pkt_len, uint16_t rx_buf_size, 852 bool rx_scatter_enabled, const char **error) 853 { 854 if (!rx_scatter_enabled && max_rx_pkt_len > rx_buf_size) { 855 *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small"; 856 return false; 857 } 858 859 return true; 860 } 861 862 static bool 863 virtio_check_scatter_on_all_rx_queues(struct rte_eth_dev *dev, 864 uint16_t frame_size) 865 { 866 struct virtio_hw *hw = dev->data->dev_private; 867 struct virtnet_rx *rxvq; 868 struct virtqueue *vq; 869 unsigned int qidx; 870 uint16_t buf_size; 871 const char *error; 872 873 if (hw->vqs == NULL) 874 return true; 875 876 for (qidx = 0; (vq = hw->vqs[2 * qidx + VTNET_SQ_RQ_QUEUE_IDX]) != NULL; 877 qidx++) { 878 rxvq = &vq->rxq; 879 if (rxvq->mpool == NULL) 880 continue; 881 buf_size = virtio_rx_mem_pool_buf_size(rxvq->mpool); 882 883 if (!virtio_rx_check_scatter(frame_size, buf_size, 884 hw->rx_ol_scatter, &error)) { 885 PMD_INIT_LOG(ERR, "MTU check for RxQ %u failed: %s", 886 qidx, error); 887 return false; 888 } 889 } 890 891 return true; 892 } 893 894 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 895 static int 896 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 897 { 898 struct virtio_hw *hw = dev->data->dev_private; 899 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 900 hw->vtnet_hdr_size; 901 uint32_t frame_size = mtu + ether_hdr_len; 902 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 903 904 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 905 906 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 907 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 908 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 909 return -EINVAL; 910 } 911 912 if (!virtio_check_scatter_on_all_rx_queues(dev, frame_size)) { 913 PMD_INIT_LOG(ERR, "MTU vs Rx scatter and Rx buffers check failed"); 914 return -EINVAL; 915 } 916 917 hw->max_rx_pkt_len = frame_size; 918 dev->data->dev_conf.rxmode.max_rx_pkt_len = hw->max_rx_pkt_len; 919 920 return 0; 921 } 922 923 static int 924 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 925 { 926 struct virtio_hw *hw = dev->data->dev_private; 927 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 928 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 929 930 virtqueue_enable_intr(vq); 931 virtio_mb(hw->weak_barriers); 932 return 0; 933 } 934 935 static int 936 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 937 { 938 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 939 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 940 941 virtqueue_disable_intr(vq); 942 return 0; 943 } 944 945 /* 946 * dev_ops for virtio, bare necessities for basic operation 947 */ 948 static const struct eth_dev_ops virtio_eth_dev_ops = { 949 .dev_configure = virtio_dev_configure, 950 .dev_start = virtio_dev_start, 951 .dev_stop = virtio_dev_stop, 952 .dev_close = virtio_dev_close, 953 .promiscuous_enable = virtio_dev_promiscuous_enable, 954 .promiscuous_disable = virtio_dev_promiscuous_disable, 955 .allmulticast_enable = virtio_dev_allmulticast_enable, 956 .allmulticast_disable = virtio_dev_allmulticast_disable, 957 .mtu_set = virtio_mtu_set, 958 .dev_infos_get = virtio_dev_info_get, 959 .stats_get = virtio_dev_stats_get, 960 .xstats_get = virtio_dev_xstats_get, 961 .xstats_get_names = virtio_dev_xstats_get_names, 962 .stats_reset = virtio_dev_stats_reset, 963 .xstats_reset = virtio_dev_stats_reset, 964 .link_update = virtio_dev_link_update, 965 .vlan_offload_set = virtio_dev_vlan_offload_set, 966 .rx_queue_setup = virtio_dev_rx_queue_setup, 967 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 968 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 969 .rx_queue_release = virtio_dev_queue_release, 970 .tx_queue_setup = virtio_dev_tx_queue_setup, 971 .tx_queue_release = virtio_dev_queue_release, 972 /* collect stats per queue */ 973 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 974 .vlan_filter_set = virtio_vlan_filter_set, 975 .mac_addr_add = virtio_mac_addr_add, 976 .mac_addr_remove = virtio_mac_addr_remove, 977 .mac_addr_set = virtio_mac_addr_set, 978 }; 979 980 /* 981 * dev_ops for virtio-user in secondary processes, as we just have 982 * some limited supports currently. 983 */ 984 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 985 .dev_infos_get = virtio_dev_info_get, 986 .stats_get = virtio_dev_stats_get, 987 .xstats_get = virtio_dev_xstats_get, 988 .xstats_get_names = virtio_dev_xstats_get_names, 989 .stats_reset = virtio_dev_stats_reset, 990 .xstats_reset = virtio_dev_stats_reset, 991 /* collect stats per queue */ 992 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 993 }; 994 995 static void 996 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 997 { 998 unsigned i; 999 1000 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1001 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1002 if (txvq == NULL) 1003 continue; 1004 1005 stats->opackets += txvq->stats.packets; 1006 stats->obytes += txvq->stats.bytes; 1007 1008 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 1009 stats->q_opackets[i] = txvq->stats.packets; 1010 stats->q_obytes[i] = txvq->stats.bytes; 1011 } 1012 } 1013 1014 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1015 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1016 if (rxvq == NULL) 1017 continue; 1018 1019 stats->ipackets += rxvq->stats.packets; 1020 stats->ibytes += rxvq->stats.bytes; 1021 stats->ierrors += rxvq->stats.errors; 1022 1023 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 1024 stats->q_ipackets[i] = rxvq->stats.packets; 1025 stats->q_ibytes[i] = rxvq->stats.bytes; 1026 } 1027 } 1028 1029 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 1030 } 1031 1032 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 1033 struct rte_eth_xstat_name *xstats_names, 1034 __rte_unused unsigned limit) 1035 { 1036 unsigned i; 1037 unsigned count = 0; 1038 unsigned t; 1039 1040 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1041 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1042 1043 if (xstats_names != NULL) { 1044 /* Note: limit checked in rte_eth_xstats_names() */ 1045 1046 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1047 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1048 if (rxvq == NULL) 1049 continue; 1050 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1051 snprintf(xstats_names[count].name, 1052 sizeof(xstats_names[count].name), 1053 "rx_q%u_%s", i, 1054 rte_virtio_rxq_stat_strings[t].name); 1055 count++; 1056 } 1057 } 1058 1059 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1060 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1061 if (txvq == NULL) 1062 continue; 1063 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1064 snprintf(xstats_names[count].name, 1065 sizeof(xstats_names[count].name), 1066 "tx_q%u_%s", i, 1067 rte_virtio_txq_stat_strings[t].name); 1068 count++; 1069 } 1070 } 1071 return count; 1072 } 1073 return nstats; 1074 } 1075 1076 static int 1077 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1078 unsigned n) 1079 { 1080 unsigned i; 1081 unsigned count = 0; 1082 1083 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1084 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1085 1086 if (n < nstats) 1087 return nstats; 1088 1089 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1090 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1091 1092 if (rxvq == NULL) 1093 continue; 1094 1095 unsigned t; 1096 1097 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1098 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1099 rte_virtio_rxq_stat_strings[t].offset); 1100 xstats[count].id = count; 1101 count++; 1102 } 1103 } 1104 1105 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1106 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1107 1108 if (txvq == NULL) 1109 continue; 1110 1111 unsigned t; 1112 1113 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1114 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1115 rte_virtio_txq_stat_strings[t].offset); 1116 xstats[count].id = count; 1117 count++; 1118 } 1119 } 1120 1121 return count; 1122 } 1123 1124 static int 1125 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1126 { 1127 virtio_update_stats(dev, stats); 1128 1129 return 0; 1130 } 1131 1132 static int 1133 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1134 { 1135 unsigned int i; 1136 1137 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1138 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1139 if (txvq == NULL) 1140 continue; 1141 1142 txvq->stats.packets = 0; 1143 txvq->stats.bytes = 0; 1144 txvq->stats.multicast = 0; 1145 txvq->stats.broadcast = 0; 1146 memset(txvq->stats.size_bins, 0, 1147 sizeof(txvq->stats.size_bins[0]) * 8); 1148 } 1149 1150 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1151 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1152 if (rxvq == NULL) 1153 continue; 1154 1155 rxvq->stats.packets = 0; 1156 rxvq->stats.bytes = 0; 1157 rxvq->stats.errors = 0; 1158 rxvq->stats.multicast = 0; 1159 rxvq->stats.broadcast = 0; 1160 memset(rxvq->stats.size_bins, 0, 1161 sizeof(rxvq->stats.size_bins[0]) * 8); 1162 } 1163 1164 return 0; 1165 } 1166 1167 static void 1168 virtio_set_hwaddr(struct virtio_hw *hw) 1169 { 1170 virtio_write_dev_config(hw, 1171 offsetof(struct virtio_net_config, mac), 1172 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1173 } 1174 1175 static void 1176 virtio_get_hwaddr(struct virtio_hw *hw) 1177 { 1178 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) { 1179 virtio_read_dev_config(hw, 1180 offsetof(struct virtio_net_config, mac), 1181 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1182 } else { 1183 rte_eth_random_addr(&hw->mac_addr[0]); 1184 virtio_set_hwaddr(hw); 1185 } 1186 } 1187 1188 static int 1189 virtio_mac_table_set(struct virtio_hw *hw, 1190 const struct virtio_net_ctrl_mac *uc, 1191 const struct virtio_net_ctrl_mac *mc) 1192 { 1193 struct virtio_pmd_ctrl ctrl; 1194 int err, len[2]; 1195 1196 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1197 PMD_DRV_LOG(INFO, "host does not support mac table"); 1198 return -1; 1199 } 1200 1201 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1202 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1203 1204 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1205 memcpy(ctrl.data, uc, len[0]); 1206 1207 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 1208 memcpy(ctrl.data + len[0], mc, len[1]); 1209 1210 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1211 if (err != 0) 1212 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1213 return err; 1214 } 1215 1216 static int 1217 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 1218 uint32_t index, uint32_t vmdq __rte_unused) 1219 { 1220 struct virtio_hw *hw = dev->data->dev_private; 1221 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 1222 unsigned int i; 1223 struct virtio_net_ctrl_mac *uc, *mc; 1224 1225 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1226 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1227 return -EINVAL; 1228 } 1229 1230 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1231 sizeof(uc->entries)); 1232 uc->entries = 0; 1233 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1234 sizeof(mc->entries)); 1235 mc->entries = 0; 1236 1237 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1238 const struct rte_ether_addr *addr 1239 = (i == index) ? mac_addr : addrs + i; 1240 struct virtio_net_ctrl_mac *tbl 1241 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1242 1243 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1244 } 1245 1246 return virtio_mac_table_set(hw, uc, mc); 1247 } 1248 1249 static void 1250 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1251 { 1252 struct virtio_hw *hw = dev->data->dev_private; 1253 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1254 struct virtio_net_ctrl_mac *uc, *mc; 1255 unsigned int i; 1256 1257 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1258 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1259 return; 1260 } 1261 1262 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1263 sizeof(uc->entries)); 1264 uc->entries = 0; 1265 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1266 sizeof(mc->entries)); 1267 mc->entries = 0; 1268 1269 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1270 struct virtio_net_ctrl_mac *tbl; 1271 1272 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1273 continue; 1274 1275 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1276 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1277 RTE_ETHER_ADDR_LEN); 1278 } 1279 1280 virtio_mac_table_set(hw, uc, mc); 1281 } 1282 1283 static int 1284 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1285 { 1286 struct virtio_hw *hw = dev->data->dev_private; 1287 1288 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1289 1290 /* Use atomic update if available */ 1291 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1292 struct virtio_pmd_ctrl ctrl; 1293 int len = RTE_ETHER_ADDR_LEN; 1294 1295 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1296 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1297 1298 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1299 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1300 } 1301 1302 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC)) 1303 return -ENOTSUP; 1304 1305 virtio_set_hwaddr(hw); 1306 return 0; 1307 } 1308 1309 static int 1310 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1311 { 1312 struct virtio_hw *hw = dev->data->dev_private; 1313 struct virtio_pmd_ctrl ctrl; 1314 int len; 1315 1316 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1317 return -ENOTSUP; 1318 1319 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1320 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1321 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1322 len = sizeof(vlan_id); 1323 1324 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1325 } 1326 1327 static int 1328 virtio_intr_unmask(struct rte_eth_dev *dev) 1329 { 1330 struct virtio_hw *hw = dev->data->dev_private; 1331 1332 if (rte_intr_ack(dev->intr_handle) < 0) 1333 return -1; 1334 1335 if (VIRTIO_OPS(hw)->intr_detect) 1336 VIRTIO_OPS(hw)->intr_detect(hw); 1337 1338 return 0; 1339 } 1340 1341 static int 1342 virtio_intr_enable(struct rte_eth_dev *dev) 1343 { 1344 struct virtio_hw *hw = dev->data->dev_private; 1345 1346 if (rte_intr_enable(dev->intr_handle) < 0) 1347 return -1; 1348 1349 if (VIRTIO_OPS(hw)->intr_detect) 1350 VIRTIO_OPS(hw)->intr_detect(hw); 1351 1352 return 0; 1353 } 1354 1355 static int 1356 virtio_intr_disable(struct rte_eth_dev *dev) 1357 { 1358 struct virtio_hw *hw = dev->data->dev_private; 1359 1360 if (rte_intr_disable(dev->intr_handle) < 0) 1361 return -1; 1362 1363 if (VIRTIO_OPS(hw)->intr_detect) 1364 VIRTIO_OPS(hw)->intr_detect(hw); 1365 1366 return 0; 1367 } 1368 1369 static int 1370 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1371 { 1372 uint64_t host_features; 1373 1374 /* Prepare guest_features: feature that driver wants to support */ 1375 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1376 req_features); 1377 1378 /* Read device(host) feature bits */ 1379 host_features = VIRTIO_OPS(hw)->get_features(hw); 1380 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1381 host_features); 1382 1383 /* If supported, ensure MTU value is valid before acknowledging it. */ 1384 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1385 struct virtio_net_config config; 1386 1387 virtio_read_dev_config(hw, 1388 offsetof(struct virtio_net_config, mtu), 1389 &config.mtu, sizeof(config.mtu)); 1390 1391 if (config.mtu < RTE_ETHER_MIN_MTU) 1392 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1393 } 1394 1395 /* 1396 * Negotiate features: Subset of device feature bits are written back 1397 * guest feature bits. 1398 */ 1399 hw->guest_features = req_features; 1400 hw->guest_features = virtio_negotiate_features(hw, host_features); 1401 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1402 hw->guest_features); 1403 1404 if (VIRTIO_OPS(hw)->features_ok(hw) < 0) 1405 return -1; 1406 1407 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) { 1408 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1409 1410 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1411 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!"); 1412 return -1; 1413 } 1414 } 1415 1416 hw->req_guest_features = req_features; 1417 1418 return 0; 1419 } 1420 1421 int 1422 virtio_dev_pause(struct rte_eth_dev *dev) 1423 { 1424 struct virtio_hw *hw = dev->data->dev_private; 1425 1426 rte_spinlock_lock(&hw->state_lock); 1427 1428 if (hw->started == 0) { 1429 /* Device is just stopped. */ 1430 rte_spinlock_unlock(&hw->state_lock); 1431 return -1; 1432 } 1433 hw->started = 0; 1434 /* 1435 * Prevent the worker threads from touching queues to avoid contention, 1436 * 1 ms should be enough for the ongoing Tx function to finish. 1437 */ 1438 rte_delay_ms(1); 1439 return 0; 1440 } 1441 1442 /* 1443 * Recover hw state to let the worker threads continue. 1444 */ 1445 void 1446 virtio_dev_resume(struct rte_eth_dev *dev) 1447 { 1448 struct virtio_hw *hw = dev->data->dev_private; 1449 1450 hw->started = 1; 1451 rte_spinlock_unlock(&hw->state_lock); 1452 } 1453 1454 /* 1455 * Should be called only after device is paused. 1456 */ 1457 int 1458 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1459 int nb_pkts) 1460 { 1461 struct virtio_hw *hw = dev->data->dev_private; 1462 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1463 int ret; 1464 1465 hw->inject_pkts = tx_pkts; 1466 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1467 hw->inject_pkts = NULL; 1468 1469 return ret; 1470 } 1471 1472 static void 1473 virtio_notify_peers(struct rte_eth_dev *dev) 1474 { 1475 struct virtio_hw *hw = dev->data->dev_private; 1476 struct virtnet_rx *rxvq; 1477 struct rte_mbuf *rarp_mbuf; 1478 1479 if (!dev->data->rx_queues) 1480 return; 1481 1482 rxvq = dev->data->rx_queues[0]; 1483 if (!rxvq) 1484 return; 1485 1486 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1487 (struct rte_ether_addr *)hw->mac_addr); 1488 if (rarp_mbuf == NULL) { 1489 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1490 return; 1491 } 1492 1493 /* If virtio port just stopped, no need to send RARP */ 1494 if (virtio_dev_pause(dev) < 0) { 1495 rte_pktmbuf_free(rarp_mbuf); 1496 return; 1497 } 1498 1499 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1500 virtio_dev_resume(dev); 1501 } 1502 1503 static void 1504 virtio_ack_link_announce(struct rte_eth_dev *dev) 1505 { 1506 struct virtio_hw *hw = dev->data->dev_private; 1507 struct virtio_pmd_ctrl ctrl; 1508 1509 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1510 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1511 1512 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1513 } 1514 1515 /* 1516 * Process virtio config changed interrupt. Call the callback 1517 * if link state changed, generate gratuitous RARP packet if 1518 * the status indicates an ANNOUNCE. 1519 */ 1520 void 1521 virtio_interrupt_handler(void *param) 1522 { 1523 struct rte_eth_dev *dev = param; 1524 struct virtio_hw *hw = dev->data->dev_private; 1525 uint8_t isr; 1526 uint16_t status; 1527 1528 /* Read interrupt status which clears interrupt */ 1529 isr = virtio_get_isr(hw); 1530 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1531 1532 if (virtio_intr_unmask(dev) < 0) 1533 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1534 1535 if (isr & VIRTIO_ISR_CONFIG) { 1536 if (virtio_dev_link_update(dev, 0) == 0) 1537 rte_eth_dev_callback_process(dev, 1538 RTE_ETH_EVENT_INTR_LSC, 1539 NULL); 1540 1541 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1542 virtio_read_dev_config(hw, 1543 offsetof(struct virtio_net_config, status), 1544 &status, sizeof(status)); 1545 if (status & VIRTIO_NET_S_ANNOUNCE) { 1546 virtio_notify_peers(dev); 1547 if (hw->cvq) 1548 virtio_ack_link_announce(dev); 1549 } 1550 } 1551 } 1552 } 1553 1554 /* set rx and tx handlers according to what is supported */ 1555 static void 1556 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1557 { 1558 struct virtio_hw *hw = eth_dev->data->dev_private; 1559 1560 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1561 if (virtio_with_packed_queue(hw)) { 1562 PMD_INIT_LOG(INFO, 1563 "virtio: using packed ring %s Tx path on port %u", 1564 hw->use_vec_tx ? "vectorized" : "standard", 1565 eth_dev->data->port_id); 1566 if (hw->use_vec_tx) 1567 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1568 else 1569 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1570 } else { 1571 if (hw->use_inorder_tx) { 1572 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1573 eth_dev->data->port_id); 1574 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1575 } else { 1576 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1577 eth_dev->data->port_id); 1578 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1579 } 1580 } 1581 1582 if (virtio_with_packed_queue(hw)) { 1583 if (hw->use_vec_rx) { 1584 PMD_INIT_LOG(INFO, 1585 "virtio: using packed ring vectorized Rx path on port %u", 1586 eth_dev->data->port_id); 1587 eth_dev->rx_pkt_burst = 1588 &virtio_recv_pkts_packed_vec; 1589 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1590 PMD_INIT_LOG(INFO, 1591 "virtio: using packed ring mergeable buffer Rx path on port %u", 1592 eth_dev->data->port_id); 1593 eth_dev->rx_pkt_burst = 1594 &virtio_recv_mergeable_pkts_packed; 1595 } else { 1596 PMD_INIT_LOG(INFO, 1597 "virtio: using packed ring standard Rx path on port %u", 1598 eth_dev->data->port_id); 1599 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1600 } 1601 } else { 1602 if (hw->use_vec_rx) { 1603 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1604 eth_dev->data->port_id); 1605 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1606 } else if (hw->use_inorder_rx) { 1607 PMD_INIT_LOG(INFO, 1608 "virtio: using inorder Rx path on port %u", 1609 eth_dev->data->port_id); 1610 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1611 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1612 PMD_INIT_LOG(INFO, 1613 "virtio: using mergeable buffer Rx path on port %u", 1614 eth_dev->data->port_id); 1615 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1616 } else { 1617 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1618 eth_dev->data->port_id); 1619 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1620 } 1621 } 1622 1623 } 1624 1625 /* Only support 1:1 queue/interrupt mapping so far. 1626 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1627 * interrupt vectors (<N+1). 1628 */ 1629 static int 1630 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1631 { 1632 uint32_t i; 1633 struct virtio_hw *hw = dev->data->dev_private; 1634 1635 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1636 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1637 dev->intr_handle->intr_vec[i] = i + 1; 1638 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1639 VIRTIO_MSI_NO_VECTOR) { 1640 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1641 return -EBUSY; 1642 } 1643 } 1644 1645 return 0; 1646 } 1647 1648 static void 1649 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1650 { 1651 uint32_t i; 1652 struct virtio_hw *hw = dev->data->dev_private; 1653 1654 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1655 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1656 VIRTIO_OPS(hw)->set_queue_irq(hw, 1657 hw->vqs[i * VTNET_CQ], 1658 VIRTIO_MSI_NO_VECTOR); 1659 } 1660 1661 static int 1662 virtio_configure_intr(struct rte_eth_dev *dev) 1663 { 1664 struct virtio_hw *hw = dev->data->dev_private; 1665 1666 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1667 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1668 return -ENOTSUP; 1669 } 1670 1671 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1672 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1673 return -1; 1674 } 1675 1676 if (!dev->intr_handle->intr_vec) { 1677 dev->intr_handle->intr_vec = 1678 rte_zmalloc("intr_vec", 1679 hw->max_queue_pairs * sizeof(int), 0); 1680 if (!dev->intr_handle->intr_vec) { 1681 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1682 hw->max_queue_pairs); 1683 return -ENOMEM; 1684 } 1685 } 1686 1687 /* Re-register callback to update max_intr */ 1688 rte_intr_callback_unregister(dev->intr_handle, 1689 virtio_interrupt_handler, 1690 dev); 1691 rte_intr_callback_register(dev->intr_handle, 1692 virtio_interrupt_handler, 1693 dev); 1694 1695 /* DO NOT try to remove this! This function will enable msix, or QEMU 1696 * will encounter SIGSEGV when DRIVER_OK is sent. 1697 * And for legacy devices, this should be done before queue/vec binding 1698 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1699 * (22) will be ignored. 1700 */ 1701 if (virtio_intr_enable(dev) < 0) { 1702 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1703 return -1; 1704 } 1705 1706 if (virtio_queues_bind_intr(dev) < 0) { 1707 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1708 return -1; 1709 } 1710 1711 return 0; 1712 } 1713 #define DUPLEX_UNKNOWN 0xff 1714 /* reset device and renegotiate features if needed */ 1715 static int 1716 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1717 { 1718 struct virtio_hw *hw = eth_dev->data->dev_private; 1719 struct virtio_net_config *config; 1720 struct virtio_net_config local_config; 1721 int ret; 1722 1723 /* Reset the device although not necessary at startup */ 1724 virtio_reset(hw); 1725 1726 if (hw->vqs) { 1727 virtio_dev_free_mbufs(eth_dev); 1728 virtio_free_queues(hw); 1729 } 1730 1731 /* Tell the host we've noticed this device. */ 1732 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1733 1734 /* Tell the host we've known how to drive the device. */ 1735 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1736 if (virtio_ethdev_negotiate_features(hw, req_features) < 0) 1737 return -1; 1738 1739 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1740 1741 /* If host does not support both status and MSI-X then disable LSC */ 1742 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc) 1743 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1744 else 1745 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1746 1747 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1748 1749 /* Setting up rx_header size for the device */ 1750 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1751 virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 1752 virtio_with_packed_queue(hw)) 1753 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1754 else 1755 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1756 1757 /* Copy the permanent MAC address to: virtio_hw */ 1758 virtio_get_hwaddr(hw); 1759 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1760 ð_dev->data->mac_addrs[0]); 1761 PMD_INIT_LOG(DEBUG, 1762 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1763 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1764 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1765 1766 if (hw->speed == ETH_SPEED_NUM_UNKNOWN) { 1767 if (virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) { 1768 config = &local_config; 1769 virtio_read_dev_config(hw, 1770 offsetof(struct virtio_net_config, speed), 1771 &config->speed, sizeof(config->speed)); 1772 virtio_read_dev_config(hw, 1773 offsetof(struct virtio_net_config, duplex), 1774 &config->duplex, sizeof(config->duplex)); 1775 hw->speed = config->speed; 1776 hw->duplex = config->duplex; 1777 } 1778 } 1779 if (hw->duplex == DUPLEX_UNKNOWN) 1780 hw->duplex = ETH_LINK_FULL_DUPLEX; 1781 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1782 hw->speed, hw->duplex); 1783 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1784 config = &local_config; 1785 1786 virtio_read_dev_config(hw, 1787 offsetof(struct virtio_net_config, mac), 1788 &config->mac, sizeof(config->mac)); 1789 1790 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1791 virtio_read_dev_config(hw, 1792 offsetof(struct virtio_net_config, status), 1793 &config->status, sizeof(config->status)); 1794 } else { 1795 PMD_INIT_LOG(DEBUG, 1796 "VIRTIO_NET_F_STATUS is not supported"); 1797 config->status = 0; 1798 } 1799 1800 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ)) { 1801 virtio_read_dev_config(hw, 1802 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1803 &config->max_virtqueue_pairs, 1804 sizeof(config->max_virtqueue_pairs)); 1805 } else { 1806 PMD_INIT_LOG(DEBUG, 1807 "VIRTIO_NET_F_MQ is not supported"); 1808 config->max_virtqueue_pairs = 1; 1809 } 1810 1811 hw->max_queue_pairs = config->max_virtqueue_pairs; 1812 1813 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) { 1814 virtio_read_dev_config(hw, 1815 offsetof(struct virtio_net_config, mtu), 1816 &config->mtu, 1817 sizeof(config->mtu)); 1818 1819 /* 1820 * MTU value has already been checked at negotiation 1821 * time, but check again in case it has changed since 1822 * then, which should not happen. 1823 */ 1824 if (config->mtu < RTE_ETHER_MIN_MTU) { 1825 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1826 config->mtu); 1827 return -1; 1828 } 1829 1830 hw->max_mtu = config->mtu; 1831 /* Set initial MTU to maximum one supported by vhost */ 1832 eth_dev->data->mtu = config->mtu; 1833 1834 } else { 1835 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1836 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1837 } 1838 1839 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1840 config->max_virtqueue_pairs); 1841 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1842 PMD_INIT_LOG(DEBUG, 1843 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1844 config->mac[0], config->mac[1], 1845 config->mac[2], config->mac[3], 1846 config->mac[4], config->mac[5]); 1847 } else { 1848 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1849 hw->max_queue_pairs = 1; 1850 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1851 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1852 } 1853 1854 ret = virtio_alloc_queues(eth_dev); 1855 if (ret < 0) 1856 return ret; 1857 1858 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1859 if (virtio_configure_intr(eth_dev) < 0) { 1860 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1861 virtio_free_queues(hw); 1862 return -1; 1863 } 1864 } 1865 1866 virtio_reinit_complete(hw); 1867 1868 return 0; 1869 } 1870 1871 /* 1872 * This function is based on probe() function in virtio_pci.c 1873 * It returns 0 on success. 1874 */ 1875 int 1876 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1877 { 1878 struct virtio_hw *hw = eth_dev->data->dev_private; 1879 uint32_t speed = ETH_SPEED_NUM_UNKNOWN; 1880 int vectorized = 0; 1881 int ret; 1882 1883 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1884 PMD_INIT_LOG(ERR, 1885 "Not sufficient headroom required = %d, avail = %d", 1886 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1887 RTE_PKTMBUF_HEADROOM); 1888 1889 return -1; 1890 } 1891 1892 eth_dev->dev_ops = &virtio_eth_dev_ops; 1893 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done; 1894 1895 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1896 set_rxtx_funcs(eth_dev); 1897 return 0; 1898 } 1899 1900 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized); 1901 if (ret < 0) 1902 return ret; 1903 hw->speed = speed; 1904 1905 /* Allocate memory for storing MAC addresses */ 1906 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1907 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1908 if (eth_dev->data->mac_addrs == NULL) { 1909 PMD_INIT_LOG(ERR, 1910 "Failed to allocate %d bytes needed to store MAC addresses", 1911 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1912 return -ENOMEM; 1913 } 1914 1915 rte_spinlock_init(&hw->state_lock); 1916 1917 /* reset device and negotiate default features */ 1918 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1919 if (ret < 0) 1920 goto err_virtio_init; 1921 1922 if (vectorized) { 1923 if (!virtio_with_packed_queue(hw)) { 1924 hw->use_vec_rx = 1; 1925 } else { 1926 #if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM) 1927 hw->use_vec_rx = 1; 1928 hw->use_vec_tx = 1; 1929 #else 1930 PMD_DRV_LOG(INFO, 1931 "building environment do not support packed ring vectorized"); 1932 #endif 1933 } 1934 } 1935 1936 hw->opened = 1; 1937 1938 return 0; 1939 1940 err_virtio_init: 1941 rte_free(eth_dev->data->mac_addrs); 1942 eth_dev->data->mac_addrs = NULL; 1943 return ret; 1944 } 1945 1946 static uint32_t 1947 virtio_dev_speed_capa_get(uint32_t speed) 1948 { 1949 switch (speed) { 1950 case ETH_SPEED_NUM_10G: 1951 return ETH_LINK_SPEED_10G; 1952 case ETH_SPEED_NUM_20G: 1953 return ETH_LINK_SPEED_20G; 1954 case ETH_SPEED_NUM_25G: 1955 return ETH_LINK_SPEED_25G; 1956 case ETH_SPEED_NUM_40G: 1957 return ETH_LINK_SPEED_40G; 1958 case ETH_SPEED_NUM_50G: 1959 return ETH_LINK_SPEED_50G; 1960 case ETH_SPEED_NUM_56G: 1961 return ETH_LINK_SPEED_56G; 1962 case ETH_SPEED_NUM_100G: 1963 return ETH_LINK_SPEED_100G; 1964 case ETH_SPEED_NUM_200G: 1965 return ETH_LINK_SPEED_200G; 1966 default: 1967 return 0; 1968 } 1969 } 1970 1971 static int vectorized_check_handler(__rte_unused const char *key, 1972 const char *value, void *ret_val) 1973 { 1974 if (strcmp(value, "1") == 0) 1975 *(int *)ret_val = 1; 1976 else 1977 *(int *)ret_val = 0; 1978 1979 return 0; 1980 } 1981 1982 #define VIRTIO_ARG_SPEED "speed" 1983 #define VIRTIO_ARG_VECTORIZED "vectorized" 1984 1985 static int 1986 link_speed_handler(const char *key __rte_unused, 1987 const char *value, void *ret_val) 1988 { 1989 uint32_t val; 1990 if (!value || !ret_val) 1991 return -EINVAL; 1992 val = strtoul(value, NULL, 0); 1993 /* validate input */ 1994 if (virtio_dev_speed_capa_get(val) == 0) 1995 return -EINVAL; 1996 *(uint32_t *)ret_val = val; 1997 1998 return 0; 1999 } 2000 2001 2002 static int 2003 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized) 2004 { 2005 struct rte_kvargs *kvlist; 2006 int ret = 0; 2007 2008 if (devargs == NULL) 2009 return 0; 2010 2011 kvlist = rte_kvargs_parse(devargs->args, NULL); 2012 if (kvlist == NULL) { 2013 PMD_INIT_LOG(ERR, "error when parsing param"); 2014 return 0; 2015 } 2016 2017 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2018 ret = rte_kvargs_process(kvlist, 2019 VIRTIO_ARG_SPEED, 2020 link_speed_handler, speed); 2021 if (ret < 0) { 2022 PMD_INIT_LOG(ERR, "Failed to parse %s", 2023 VIRTIO_ARG_SPEED); 2024 goto exit; 2025 } 2026 } 2027 2028 if (vectorized && 2029 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2030 ret = rte_kvargs_process(kvlist, 2031 VIRTIO_ARG_VECTORIZED, 2032 vectorized_check_handler, vectorized); 2033 if (ret < 0) { 2034 PMD_INIT_LOG(ERR, "Failed to parse %s", 2035 VIRTIO_ARG_VECTORIZED); 2036 goto exit; 2037 } 2038 } 2039 2040 exit: 2041 rte_kvargs_free(kvlist); 2042 return ret; 2043 } 2044 2045 static uint8_t 2046 rx_offload_enabled(struct virtio_hw *hw) 2047 { 2048 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2049 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2050 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2051 } 2052 2053 static uint8_t 2054 tx_offload_enabled(struct virtio_hw *hw) 2055 { 2056 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) || 2057 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2058 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2059 } 2060 2061 /* 2062 * Configure virtio device 2063 * It returns 0 on success. 2064 */ 2065 static int 2066 virtio_dev_configure(struct rte_eth_dev *dev) 2067 { 2068 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2069 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2070 struct virtio_hw *hw = dev->data->dev_private; 2071 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2072 hw->vtnet_hdr_size; 2073 uint64_t rx_offloads = rxmode->offloads; 2074 uint64_t tx_offloads = txmode->offloads; 2075 uint64_t req_features; 2076 int ret; 2077 2078 PMD_INIT_LOG(DEBUG, "configure"); 2079 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2080 2081 if (rxmode->mq_mode != ETH_MQ_RX_NONE) { 2082 PMD_DRV_LOG(ERR, 2083 "Unsupported Rx multi queue mode %d", 2084 rxmode->mq_mode); 2085 return -EINVAL; 2086 } 2087 2088 if (txmode->mq_mode != ETH_MQ_TX_NONE) { 2089 PMD_DRV_LOG(ERR, 2090 "Unsupported Tx multi queue mode %d", 2091 txmode->mq_mode); 2092 return -EINVAL; 2093 } 2094 2095 if (dev->data->dev_conf.intr_conf.rxq) { 2096 ret = virtio_init_device(dev, hw->req_guest_features); 2097 if (ret < 0) 2098 return ret; 2099 } 2100 2101 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2102 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2103 2104 hw->max_rx_pkt_len = rxmode->max_rx_pkt_len; 2105 2106 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2107 DEV_RX_OFFLOAD_TCP_CKSUM)) 2108 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2109 2110 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2111 req_features |= 2112 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2113 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2114 2115 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2116 DEV_TX_OFFLOAD_TCP_CKSUM)) 2117 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2118 2119 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2120 req_features |= 2121 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2122 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2123 2124 /* if request features changed, reinit the device */ 2125 if (req_features != hw->req_guest_features) { 2126 ret = virtio_init_device(dev, req_features); 2127 if (ret < 0) 2128 return ret; 2129 } 2130 2131 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2132 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2133 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2134 PMD_DRV_LOG(ERR, 2135 "rx checksum not available on this host"); 2136 return -ENOTSUP; 2137 } 2138 2139 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2140 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2141 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2142 PMD_DRV_LOG(ERR, 2143 "Large Receive Offload not available on this host"); 2144 return -ENOTSUP; 2145 } 2146 2147 /* start control queue */ 2148 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2149 virtio_dev_cq_start(dev); 2150 2151 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2152 hw->vlan_strip = 1; 2153 2154 hw->rx_ol_scatter = (rx_offloads & DEV_RX_OFFLOAD_SCATTER); 2155 2156 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2157 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2158 PMD_DRV_LOG(ERR, 2159 "vlan filtering not available on this host"); 2160 return -ENOTSUP; 2161 } 2162 2163 hw->has_tx_offload = tx_offload_enabled(hw); 2164 hw->has_rx_offload = rx_offload_enabled(hw); 2165 2166 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2167 /* Enable vector (0) for Link State Intrerrupt */ 2168 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) == 2169 VIRTIO_MSI_NO_VECTOR) { 2170 PMD_DRV_LOG(ERR, "failed to set config vector"); 2171 return -EBUSY; 2172 } 2173 2174 if (virtio_with_packed_queue(hw)) { 2175 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2176 if ((hw->use_vec_rx || hw->use_vec_tx) && 2177 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2178 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2179 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2180 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) { 2181 PMD_DRV_LOG(INFO, 2182 "disabled packed ring vectorized path for requirements not met"); 2183 hw->use_vec_rx = 0; 2184 hw->use_vec_tx = 0; 2185 } 2186 #elif defined(RTE_ARCH_ARM) 2187 if ((hw->use_vec_rx || hw->use_vec_tx) && 2188 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) || 2189 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2190 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2191 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) { 2192 PMD_DRV_LOG(INFO, 2193 "disabled packed ring vectorized path for requirements not met"); 2194 hw->use_vec_rx = 0; 2195 hw->use_vec_tx = 0; 2196 } 2197 #else 2198 hw->use_vec_rx = 0; 2199 hw->use_vec_tx = 0; 2200 #endif 2201 2202 if (hw->use_vec_rx) { 2203 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2204 PMD_DRV_LOG(INFO, 2205 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2206 hw->use_vec_rx = 0; 2207 } 2208 2209 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) { 2210 PMD_DRV_LOG(INFO, 2211 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2212 hw->use_vec_rx = 0; 2213 } 2214 } 2215 } else { 2216 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2217 hw->use_inorder_tx = 1; 2218 hw->use_inorder_rx = 1; 2219 hw->use_vec_rx = 0; 2220 } 2221 2222 if (hw->use_vec_rx) { 2223 #if defined RTE_ARCH_ARM 2224 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2225 PMD_DRV_LOG(INFO, 2226 "disabled split ring vectorized path for requirement not met"); 2227 hw->use_vec_rx = 0; 2228 } 2229 #endif 2230 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2231 PMD_DRV_LOG(INFO, 2232 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2233 hw->use_vec_rx = 0; 2234 } 2235 2236 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2237 DEV_RX_OFFLOAD_TCP_CKSUM | 2238 DEV_RX_OFFLOAD_TCP_LRO | 2239 DEV_RX_OFFLOAD_VLAN_STRIP)) { 2240 PMD_DRV_LOG(INFO, 2241 "disabled split ring vectorized rx for offloading enabled"); 2242 hw->use_vec_rx = 0; 2243 } 2244 2245 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) { 2246 PMD_DRV_LOG(INFO, 2247 "disabled split ring vectorized rx, max SIMD bitwidth too low"); 2248 hw->use_vec_rx = 0; 2249 } 2250 } 2251 } 2252 2253 return 0; 2254 } 2255 2256 2257 static int 2258 virtio_dev_start(struct rte_eth_dev *dev) 2259 { 2260 uint16_t nb_queues, i; 2261 struct virtqueue *vq; 2262 struct virtio_hw *hw = dev->data->dev_private; 2263 int ret; 2264 2265 /* Finish the initialization of the queues */ 2266 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2267 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2268 if (ret < 0) 2269 return ret; 2270 } 2271 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2272 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2273 if (ret < 0) 2274 return ret; 2275 } 2276 2277 /* check if lsc interrupt feature is enabled */ 2278 if (dev->data->dev_conf.intr_conf.lsc) { 2279 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2280 PMD_DRV_LOG(ERR, "link status not supported by host"); 2281 return -ENOTSUP; 2282 } 2283 } 2284 2285 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2286 * in device configure, but it could be unmapped when device is 2287 * stopped. 2288 */ 2289 if (dev->data->dev_conf.intr_conf.lsc || 2290 dev->data->dev_conf.intr_conf.rxq) { 2291 virtio_intr_disable(dev); 2292 2293 /* Setup interrupt callback */ 2294 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2295 rte_intr_callback_register(dev->intr_handle, 2296 virtio_interrupt_handler, 2297 dev); 2298 2299 if (virtio_intr_enable(dev) < 0) { 2300 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2301 return -EIO; 2302 } 2303 } 2304 2305 /*Notify the backend 2306 *Otherwise the tap backend might already stop its queue due to fullness. 2307 *vhost backend will have no chance to be waked up 2308 */ 2309 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2310 if (hw->max_queue_pairs > 1) { 2311 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2312 return -EINVAL; 2313 } 2314 2315 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2316 2317 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2318 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2319 /* Flush the old packets */ 2320 virtqueue_rxvq_flush(vq); 2321 virtqueue_notify(vq); 2322 } 2323 2324 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2325 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2326 virtqueue_notify(vq); 2327 } 2328 2329 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2330 2331 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2332 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2333 VIRTQUEUE_DUMP(vq); 2334 } 2335 2336 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2337 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2338 VIRTQUEUE_DUMP(vq); 2339 } 2340 2341 set_rxtx_funcs(dev); 2342 hw->started = 1; 2343 2344 /* Initialize Link state */ 2345 virtio_dev_link_update(dev, 0); 2346 2347 return 0; 2348 } 2349 2350 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2351 { 2352 struct virtio_hw *hw = dev->data->dev_private; 2353 uint16_t nr_vq = virtio_get_nr_vq(hw); 2354 const char *type __rte_unused; 2355 unsigned int i, mbuf_num = 0; 2356 struct virtqueue *vq; 2357 struct rte_mbuf *buf; 2358 int queue_type; 2359 2360 if (hw->vqs == NULL) 2361 return; 2362 2363 for (i = 0; i < nr_vq; i++) { 2364 vq = hw->vqs[i]; 2365 if (!vq) 2366 continue; 2367 2368 queue_type = virtio_get_queue_type(hw, i); 2369 if (queue_type == VTNET_RQ) 2370 type = "rxq"; 2371 else if (queue_type == VTNET_TQ) 2372 type = "txq"; 2373 else 2374 continue; 2375 2376 PMD_INIT_LOG(DEBUG, 2377 "Before freeing %s[%d] used and unused buf", 2378 type, i); 2379 VIRTQUEUE_DUMP(vq); 2380 2381 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2382 rte_pktmbuf_free(buf); 2383 mbuf_num++; 2384 } 2385 2386 PMD_INIT_LOG(DEBUG, 2387 "After freeing %s[%d] used and unused buf", 2388 type, i); 2389 VIRTQUEUE_DUMP(vq); 2390 } 2391 2392 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2393 } 2394 2395 /* 2396 * Stop device: disable interrupt and mark link down 2397 */ 2398 int 2399 virtio_dev_stop(struct rte_eth_dev *dev) 2400 { 2401 struct virtio_hw *hw = dev->data->dev_private; 2402 struct rte_eth_link link; 2403 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2404 2405 PMD_INIT_LOG(DEBUG, "stop"); 2406 dev->data->dev_started = 0; 2407 2408 rte_spinlock_lock(&hw->state_lock); 2409 if (!hw->started) 2410 goto out_unlock; 2411 hw->started = 0; 2412 2413 if (intr_conf->lsc || intr_conf->rxq) { 2414 virtio_intr_disable(dev); 2415 2416 /* Reset interrupt callback */ 2417 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2418 rte_intr_callback_unregister(dev->intr_handle, 2419 virtio_interrupt_handler, 2420 dev); 2421 } 2422 } 2423 2424 memset(&link, 0, sizeof(link)); 2425 rte_eth_linkstatus_set(dev, &link); 2426 out_unlock: 2427 rte_spinlock_unlock(&hw->state_lock); 2428 2429 return 0; 2430 } 2431 2432 static int 2433 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2434 { 2435 struct rte_eth_link link; 2436 uint16_t status; 2437 struct virtio_hw *hw = dev->data->dev_private; 2438 2439 memset(&link, 0, sizeof(link)); 2440 link.link_duplex = hw->duplex; 2441 link.link_speed = hw->speed; 2442 link.link_autoneg = ETH_LINK_AUTONEG; 2443 2444 if (!hw->started) { 2445 link.link_status = ETH_LINK_DOWN; 2446 link.link_speed = ETH_SPEED_NUM_NONE; 2447 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2448 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2449 virtio_read_dev_config(hw, 2450 offsetof(struct virtio_net_config, status), 2451 &status, sizeof(status)); 2452 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2453 link.link_status = ETH_LINK_DOWN; 2454 link.link_speed = ETH_SPEED_NUM_NONE; 2455 PMD_INIT_LOG(DEBUG, "Port %d is down", 2456 dev->data->port_id); 2457 } else { 2458 link.link_status = ETH_LINK_UP; 2459 PMD_INIT_LOG(DEBUG, "Port %d is up", 2460 dev->data->port_id); 2461 } 2462 } else { 2463 link.link_status = ETH_LINK_UP; 2464 } 2465 2466 return rte_eth_linkstatus_set(dev, &link); 2467 } 2468 2469 static int 2470 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2471 { 2472 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2473 struct virtio_hw *hw = dev->data->dev_private; 2474 uint64_t offloads = rxmode->offloads; 2475 2476 if (mask & ETH_VLAN_FILTER_MASK) { 2477 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2478 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2479 2480 PMD_DRV_LOG(NOTICE, 2481 "vlan filtering not available on this host"); 2482 2483 return -ENOTSUP; 2484 } 2485 } 2486 2487 if (mask & ETH_VLAN_STRIP_MASK) 2488 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2489 2490 return 0; 2491 } 2492 2493 static int 2494 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2495 { 2496 uint64_t tso_mask, host_features; 2497 struct virtio_hw *hw = dev->data->dev_private; 2498 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2499 2500 dev_info->max_rx_queues = 2501 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2502 dev_info->max_tx_queues = 2503 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2504 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2505 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2506 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2507 2508 host_features = VIRTIO_OPS(hw)->get_features(hw); 2509 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2510 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2511 if (host_features & (1ULL << VIRTIO_NET_F_MRG_RXBUF)) 2512 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_SCATTER; 2513 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2514 dev_info->rx_offload_capa |= 2515 DEV_RX_OFFLOAD_TCP_CKSUM | 2516 DEV_RX_OFFLOAD_UDP_CKSUM; 2517 } 2518 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2519 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2520 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2521 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2522 if ((host_features & tso_mask) == tso_mask) 2523 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2524 2525 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2526 DEV_TX_OFFLOAD_VLAN_INSERT; 2527 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2528 dev_info->tx_offload_capa |= 2529 DEV_TX_OFFLOAD_UDP_CKSUM | 2530 DEV_TX_OFFLOAD_TCP_CKSUM; 2531 } 2532 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2533 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2534 if ((host_features & tso_mask) == tso_mask) 2535 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2536 2537 return 0; 2538 } 2539 2540 /* 2541 * It enables testpmd to collect per queue stats. 2542 */ 2543 static int 2544 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2545 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2546 __rte_unused uint8_t is_rx) 2547 { 2548 return 0; 2549 } 2550 2551 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_init, init, NOTICE); 2552 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_driver, driver, NOTICE); 2553