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_rxtx_simple.h" 37 #include "virtio_user/virtio_user_dev.h" 38 39 static int virtio_dev_configure(struct rte_eth_dev *dev); 40 static int virtio_dev_start(struct rte_eth_dev *dev); 41 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev); 42 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev); 43 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 44 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 45 static uint32_t virtio_dev_speed_capa_get(uint32_t speed); 46 static int virtio_dev_devargs_parse(struct rte_devargs *devargs, 47 uint32_t *speed, 48 int *vectorized); 49 static int virtio_dev_info_get(struct rte_eth_dev *dev, 50 struct rte_eth_dev_info *dev_info); 51 static int virtio_dev_link_update(struct rte_eth_dev *dev, 52 int wait_to_complete); 53 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask); 54 55 static void virtio_set_hwaddr(struct virtio_hw *hw); 56 static void virtio_get_hwaddr(struct virtio_hw *hw); 57 58 static int virtio_dev_stats_get(struct rte_eth_dev *dev, 59 struct rte_eth_stats *stats); 60 static int virtio_dev_xstats_get(struct rte_eth_dev *dev, 61 struct rte_eth_xstat *xstats, unsigned n); 62 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 63 struct rte_eth_xstat_name *xstats_names, 64 unsigned limit); 65 static int virtio_dev_stats_reset(struct rte_eth_dev *dev); 66 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev); 67 static int virtio_vlan_filter_set(struct rte_eth_dev *dev, 68 uint16_t vlan_id, int on); 69 static int virtio_mac_addr_add(struct rte_eth_dev *dev, 70 struct rte_ether_addr *mac_addr, 71 uint32_t index, uint32_t vmdq); 72 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); 73 static int virtio_mac_addr_set(struct rte_eth_dev *dev, 74 struct rte_ether_addr *mac_addr); 75 76 static int virtio_intr_disable(struct rte_eth_dev *dev); 77 78 static int virtio_dev_queue_stats_mapping_set( 79 struct rte_eth_dev *eth_dev, 80 uint16_t queue_id, 81 uint8_t stat_idx, 82 uint8_t is_rx); 83 84 static void virtio_notify_peers(struct rte_eth_dev *dev); 85 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 86 87 struct rte_virtio_xstats_name_off { 88 char name[RTE_ETH_XSTATS_NAME_SIZE]; 89 unsigned offset; 90 }; 91 92 /* [rt]x_qX_ is prepended to the name string here */ 93 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 94 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 95 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 96 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 97 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 98 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 99 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 100 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 101 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 102 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 103 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 104 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 105 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 106 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 107 }; 108 109 /* [rt]x_qX_ is prepended to the name string here */ 110 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 111 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 112 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 113 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 114 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 115 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 116 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 117 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 118 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 119 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 120 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 121 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 122 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 123 }; 124 125 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 126 sizeof(rte_virtio_rxq_stat_strings[0])) 127 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 128 sizeof(rte_virtio_txq_stat_strings[0])) 129 130 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 131 132 static struct virtio_pmd_ctrl * 133 virtio_send_command_packed(struct virtnet_ctl *cvq, 134 struct virtio_pmd_ctrl *ctrl, 135 int *dlen, int pkt_num) 136 { 137 struct virtqueue *vq = virtnet_cq_to_vq(cvq); 138 int head; 139 struct vring_packed_desc *desc = vq->vq_packed.ring.desc; 140 struct virtio_pmd_ctrl *result; 141 uint16_t flags; 142 int sum = 0; 143 int nb_descs = 0; 144 int k; 145 146 /* 147 * Format is enforced in qemu code: 148 * One TX packet for header; 149 * At least one TX packet per argument; 150 * One RX packet for ACK. 151 */ 152 head = vq->vq_avail_idx; 153 flags = vq->vq_packed.cached_flags; 154 desc[head].addr = cvq->virtio_net_hdr_mem; 155 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 156 vq->vq_free_cnt--; 157 nb_descs++; 158 if (++vq->vq_avail_idx >= vq->vq_nentries) { 159 vq->vq_avail_idx -= vq->vq_nentries; 160 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 161 } 162 163 for (k = 0; k < pkt_num; k++) { 164 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 165 + sizeof(struct virtio_net_ctrl_hdr) 166 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 167 desc[vq->vq_avail_idx].len = dlen[k]; 168 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT | 169 vq->vq_packed.cached_flags; 170 sum += dlen[k]; 171 vq->vq_free_cnt--; 172 nb_descs++; 173 if (++vq->vq_avail_idx >= vq->vq_nentries) { 174 vq->vq_avail_idx -= vq->vq_nentries; 175 vq->vq_packed.cached_flags ^= 176 VRING_PACKED_DESC_F_AVAIL_USED; 177 } 178 } 179 180 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 181 + sizeof(struct virtio_net_ctrl_hdr); 182 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 183 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE | 184 vq->vq_packed.cached_flags; 185 vq->vq_free_cnt--; 186 nb_descs++; 187 if (++vq->vq_avail_idx >= vq->vq_nentries) { 188 vq->vq_avail_idx -= vq->vq_nentries; 189 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 190 } 191 192 virtqueue_store_flags_packed(&desc[head], VRING_DESC_F_NEXT | flags, 193 vq->hw->weak_barriers); 194 195 virtio_wmb(vq->hw->weak_barriers); 196 virtqueue_notify(vq); 197 198 /* wait for used desc in virtqueue 199 * desc_is_used has a load-acquire or rte_io_rmb inside 200 */ 201 while (!desc_is_used(&desc[head], vq)) 202 usleep(100); 203 204 /* now get used descriptors */ 205 vq->vq_free_cnt += nb_descs; 206 vq->vq_used_cons_idx += nb_descs; 207 if (vq->vq_used_cons_idx >= vq->vq_nentries) { 208 vq->vq_used_cons_idx -= vq->vq_nentries; 209 vq->vq_packed.used_wrap_counter ^= 1; 210 } 211 212 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n" 213 "vq->vq_avail_idx=%d\n" 214 "vq->vq_used_cons_idx=%d\n" 215 "vq->vq_packed.cached_flags=0x%x\n" 216 "vq->vq_packed.used_wrap_counter=%d", 217 vq->vq_free_cnt, 218 vq->vq_avail_idx, 219 vq->vq_used_cons_idx, 220 vq->vq_packed.cached_flags, 221 vq->vq_packed.used_wrap_counter); 222 223 result = cvq->virtio_net_hdr_mz->addr; 224 return result; 225 } 226 227 static struct virtio_pmd_ctrl * 228 virtio_send_command_split(struct virtnet_ctl *cvq, 229 struct virtio_pmd_ctrl *ctrl, 230 int *dlen, int pkt_num) 231 { 232 struct virtio_pmd_ctrl *result; 233 struct virtqueue *vq = virtnet_cq_to_vq(cvq); 234 uint32_t head, i; 235 int k, sum = 0; 236 237 head = vq->vq_desc_head_idx; 238 239 /* 240 * Format is enforced in qemu code: 241 * One TX packet for header; 242 * At least one TX packet per argument; 243 * One RX packet for ACK. 244 */ 245 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT; 246 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem; 247 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 248 vq->vq_free_cnt--; 249 i = vq->vq_split.ring.desc[head].next; 250 251 for (k = 0; k < pkt_num; k++) { 252 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT; 253 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 254 + sizeof(struct virtio_net_ctrl_hdr) 255 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 256 vq->vq_split.ring.desc[i].len = dlen[k]; 257 sum += dlen[k]; 258 vq->vq_free_cnt--; 259 i = vq->vq_split.ring.desc[i].next; 260 } 261 262 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE; 263 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 264 + sizeof(struct virtio_net_ctrl_hdr); 265 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status); 266 vq->vq_free_cnt--; 267 268 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next; 269 270 vq_update_avail_ring(vq, head); 271 vq_update_avail_idx(vq); 272 273 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 274 275 virtqueue_notify(vq); 276 277 while (virtqueue_nused(vq) == 0) 278 usleep(100); 279 280 while (virtqueue_nused(vq)) { 281 uint32_t idx, desc_idx, used_idx; 282 struct vring_used_elem *uep; 283 284 used_idx = (uint32_t)(vq->vq_used_cons_idx 285 & (vq->vq_nentries - 1)); 286 uep = &vq->vq_split.ring.used->ring[used_idx]; 287 idx = (uint32_t) uep->id; 288 desc_idx = idx; 289 290 while (vq->vq_split.ring.desc[desc_idx].flags & 291 VRING_DESC_F_NEXT) { 292 desc_idx = vq->vq_split.ring.desc[desc_idx].next; 293 vq->vq_free_cnt++; 294 } 295 296 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx; 297 vq->vq_desc_head_idx = idx; 298 299 vq->vq_used_cons_idx++; 300 vq->vq_free_cnt++; 301 } 302 303 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 304 vq->vq_free_cnt, vq->vq_desc_head_idx); 305 306 result = cvq->virtio_net_hdr_mz->addr; 307 return result; 308 } 309 310 static int 311 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 312 int *dlen, int pkt_num) 313 { 314 virtio_net_ctrl_ack status = ~0; 315 struct virtio_pmd_ctrl *result; 316 struct virtqueue *vq; 317 318 ctrl->status = status; 319 320 if (!cvq) { 321 PMD_INIT_LOG(ERR, "Control queue is not supported."); 322 return -1; 323 } 324 325 rte_spinlock_lock(&cvq->lock); 326 vq = virtnet_cq_to_vq(cvq); 327 328 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 329 "vq->hw->cvq = %p vq = %p", 330 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 331 332 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 333 rte_spinlock_unlock(&cvq->lock); 334 return -1; 335 } 336 337 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 338 sizeof(struct virtio_pmd_ctrl)); 339 340 if (virtio_with_packed_queue(vq->hw)) 341 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num); 342 else 343 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num); 344 345 rte_spinlock_unlock(&cvq->lock); 346 return result->status; 347 } 348 349 static int 350 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 351 { 352 struct virtio_hw *hw = dev->data->dev_private; 353 struct virtio_pmd_ctrl ctrl; 354 int dlen[1]; 355 int ret; 356 357 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 358 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 359 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 360 361 dlen[0] = sizeof(uint16_t); 362 363 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 364 if (ret) { 365 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 366 "failed, this is too late now..."); 367 return -EINVAL; 368 } 369 370 return 0; 371 } 372 373 static uint16_t 374 virtio_get_nr_vq(struct virtio_hw *hw) 375 { 376 uint16_t nr_vq = hw->max_queue_pairs * 2; 377 378 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 379 nr_vq += 1; 380 381 return nr_vq; 382 } 383 384 static void 385 virtio_init_vring(struct virtqueue *vq) 386 { 387 int size = vq->vq_nentries; 388 uint8_t *ring_mem = vq->vq_ring_virt_mem; 389 390 PMD_INIT_FUNC_TRACE(); 391 392 memset(ring_mem, 0, vq->vq_ring_size); 393 394 vq->vq_used_cons_idx = 0; 395 vq->vq_desc_head_idx = 0; 396 vq->vq_avail_idx = 0; 397 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 398 vq->vq_free_cnt = vq->vq_nentries; 399 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 400 if (virtio_with_packed_queue(vq->hw)) { 401 vring_init_packed(&vq->vq_packed.ring, ring_mem, 402 VIRTIO_VRING_ALIGN, size); 403 vring_desc_init_packed(vq, size); 404 } else { 405 struct vring *vr = &vq->vq_split.ring; 406 407 vring_init_split(vr, ring_mem, VIRTIO_VRING_ALIGN, size); 408 vring_desc_init_split(vr->desc, size); 409 } 410 /* 411 * Disable device(host) interrupting guest 412 */ 413 virtqueue_disable_intr(vq); 414 } 415 416 static int 417 virtio_init_queue(struct rte_eth_dev *dev, uint16_t queue_idx) 418 { 419 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 420 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 421 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 422 unsigned int vq_size, size; 423 struct virtio_hw *hw = dev->data->dev_private; 424 struct virtnet_rx *rxvq = NULL; 425 struct virtnet_tx *txvq = NULL; 426 struct virtnet_ctl *cvq = NULL; 427 struct virtqueue *vq; 428 size_t sz_hdr_mz = 0; 429 void *sw_ring = NULL; 430 int queue_type = virtio_get_queue_type(hw, queue_idx); 431 int ret; 432 int numa_node = dev->device->numa_node; 433 struct rte_mbuf *fake_mbuf = NULL; 434 435 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 436 queue_idx, numa_node); 437 438 /* 439 * Read the virtqueue size from the Queue Size field 440 * Always power of 2 and if 0 virtqueue does not exist 441 */ 442 vq_size = VIRTIO_OPS(hw)->get_queue_num(hw, queue_idx); 443 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 444 if (vq_size == 0) { 445 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 446 return -EINVAL; 447 } 448 449 if (!virtio_with_packed_queue(hw) && !rte_is_power_of_2(vq_size)) { 450 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2"); 451 return -EINVAL; 452 } 453 454 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 455 dev->data->port_id, queue_idx); 456 457 size = RTE_ALIGN_CEIL(sizeof(*vq) + 458 vq_size * sizeof(struct vq_desc_extra), 459 RTE_CACHE_LINE_SIZE); 460 if (queue_type == VTNET_TQ) { 461 /* 462 * For each xmit packet, allocate a virtio_net_hdr 463 * and indirect ring elements 464 */ 465 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 466 } else if (queue_type == VTNET_CQ) { 467 /* Allocate a page for control vq command, data and status */ 468 sz_hdr_mz = rte_mem_page_size(); 469 } 470 471 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 472 numa_node); 473 if (vq == NULL) { 474 PMD_INIT_LOG(ERR, "can not allocate vq"); 475 return -ENOMEM; 476 } 477 hw->vqs[queue_idx] = vq; 478 479 vq->hw = hw; 480 vq->vq_queue_index = queue_idx; 481 vq->vq_nentries = vq_size; 482 if (virtio_with_packed_queue(hw)) { 483 vq->vq_packed.used_wrap_counter = 1; 484 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL; 485 vq->vq_packed.event_flags_shadow = 0; 486 if (queue_type == VTNET_RQ) 487 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE; 488 } 489 490 /* 491 * Reserve a memzone for vring elements 492 */ 493 size = vring_size(hw, vq_size, VIRTIO_VRING_ALIGN); 494 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_VRING_ALIGN); 495 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 496 size, vq->vq_ring_size); 497 498 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 499 numa_node, RTE_MEMZONE_IOVA_CONTIG, 500 VIRTIO_VRING_ALIGN); 501 if (mz == NULL) { 502 if (rte_errno == EEXIST) 503 mz = rte_memzone_lookup(vq_name); 504 if (mz == NULL) { 505 ret = -ENOMEM; 506 goto free_vq; 507 } 508 } 509 510 memset(mz->addr, 0, mz->len); 511 512 if (hw->use_va) 513 vq->vq_ring_mem = (uintptr_t)mz->addr; 514 else 515 vq->vq_ring_mem = mz->iova; 516 517 vq->vq_ring_virt_mem = mz->addr; 518 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, vq->vq_ring_mem); 519 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: %p", vq->vq_ring_virt_mem); 520 521 virtio_init_vring(vq); 522 523 if (sz_hdr_mz) { 524 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 525 dev->data->port_id, queue_idx); 526 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 527 numa_node, RTE_MEMZONE_IOVA_CONTIG, 528 RTE_CACHE_LINE_SIZE); 529 if (hdr_mz == NULL) { 530 if (rte_errno == EEXIST) 531 hdr_mz = rte_memzone_lookup(vq_hdr_name); 532 if (hdr_mz == NULL) { 533 ret = -ENOMEM; 534 goto free_mz; 535 } 536 } 537 } 538 539 if (queue_type == VTNET_RQ) { 540 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 541 sizeof(vq->sw_ring[0]); 542 543 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 544 RTE_CACHE_LINE_SIZE, numa_node); 545 if (!sw_ring) { 546 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 547 ret = -ENOMEM; 548 goto free_hdr_mz; 549 } 550 551 fake_mbuf = rte_zmalloc_socket("sw_ring", sizeof(*fake_mbuf), 552 RTE_CACHE_LINE_SIZE, numa_node); 553 if (!fake_mbuf) { 554 PMD_INIT_LOG(ERR, "can not allocate fake mbuf"); 555 ret = -ENOMEM; 556 goto free_sw_ring; 557 } 558 559 vq->sw_ring = sw_ring; 560 rxvq = &vq->rxq; 561 rxvq->port_id = dev->data->port_id; 562 rxvq->mz = mz; 563 rxvq->fake_mbuf = fake_mbuf; 564 } else if (queue_type == VTNET_TQ) { 565 txvq = &vq->txq; 566 txvq->port_id = dev->data->port_id; 567 txvq->mz = mz; 568 txvq->virtio_net_hdr_mz = hdr_mz; 569 if (hw->use_va) 570 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 571 else 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 if (hw->use_va) 578 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 579 else 580 cvq->virtio_net_hdr_mem = hdr_mz->iova; 581 memset(cvq->virtio_net_hdr_mz->addr, 0, rte_mem_page_size()); 582 583 hw->cvq = cvq; 584 } 585 586 if (hw->use_va) 587 vq->mbuf_addr_offset = offsetof(struct rte_mbuf, buf_addr); 588 else 589 vq->mbuf_addr_offset = offsetof(struct rte_mbuf, buf_iova); 590 591 if (queue_type == VTNET_TQ) { 592 struct virtio_tx_region *txr; 593 unsigned int i; 594 595 txr = hdr_mz->addr; 596 memset(txr, 0, vq_size * sizeof(*txr)); 597 for (i = 0; i < vq_size; i++) { 598 /* first indirect descriptor is always the tx header */ 599 if (!virtio_with_packed_queue(hw)) { 600 struct vring_desc *start_dp = txr[i].tx_indir; 601 vring_desc_init_split(start_dp, 602 RTE_DIM(txr[i].tx_indir)); 603 start_dp->addr = txvq->virtio_net_hdr_mem 604 + i * sizeof(*txr) 605 + offsetof(struct virtio_tx_region, 606 tx_hdr); 607 start_dp->len = hw->vtnet_hdr_size; 608 start_dp->flags = VRING_DESC_F_NEXT; 609 } else { 610 struct vring_packed_desc *start_dp = 611 txr[i].tx_packed_indir; 612 vring_desc_init_indirect_packed(start_dp, 613 RTE_DIM(txr[i].tx_packed_indir)); 614 start_dp->addr = txvq->virtio_net_hdr_mem 615 + i * sizeof(*txr) 616 + offsetof(struct virtio_tx_region, 617 tx_hdr); 618 start_dp->len = hw->vtnet_hdr_size; 619 } 620 } 621 } 622 623 if (VIRTIO_OPS(hw)->setup_queue(hw, vq) < 0) { 624 PMD_INIT_LOG(ERR, "setup_queue failed"); 625 ret = -EINVAL; 626 goto clean_vq; 627 } 628 629 return 0; 630 631 clean_vq: 632 hw->cvq = NULL; 633 rte_free(fake_mbuf); 634 free_sw_ring: 635 rte_free(sw_ring); 636 free_hdr_mz: 637 rte_memzone_free(hdr_mz); 638 free_mz: 639 rte_memzone_free(mz); 640 free_vq: 641 rte_free(vq); 642 hw->vqs[queue_idx] = NULL; 643 644 return ret; 645 } 646 647 static void 648 virtio_free_queues(struct virtio_hw *hw) 649 { 650 uint16_t nr_vq = virtio_get_nr_vq(hw); 651 struct virtqueue *vq; 652 int queue_type; 653 uint16_t i; 654 655 if (hw->vqs == NULL) 656 return; 657 658 for (i = 0; i < nr_vq; i++) { 659 vq = hw->vqs[i]; 660 if (!vq) 661 continue; 662 663 queue_type = virtio_get_queue_type(hw, i); 664 if (queue_type == VTNET_RQ) { 665 rte_free(vq->rxq.fake_mbuf); 666 rte_free(vq->sw_ring); 667 rte_memzone_free(vq->rxq.mz); 668 } else if (queue_type == VTNET_TQ) { 669 rte_memzone_free(vq->txq.mz); 670 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 671 } else { 672 rte_memzone_free(vq->cq.mz); 673 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 674 } 675 676 rte_free(vq); 677 hw->vqs[i] = NULL; 678 } 679 680 rte_free(hw->vqs); 681 hw->vqs = NULL; 682 } 683 684 static int 685 virtio_alloc_queues(struct rte_eth_dev *dev) 686 { 687 struct virtio_hw *hw = dev->data->dev_private; 688 uint16_t nr_vq = virtio_get_nr_vq(hw); 689 uint16_t i; 690 int ret; 691 692 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 693 if (!hw->vqs) { 694 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 695 return -ENOMEM; 696 } 697 698 for (i = 0; i < nr_vq; i++) { 699 ret = virtio_init_queue(dev, i); 700 if (ret < 0) { 701 virtio_free_queues(hw); 702 return ret; 703 } 704 } 705 706 return 0; 707 } 708 709 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 710 711 int 712 virtio_dev_close(struct rte_eth_dev *dev) 713 { 714 struct virtio_hw *hw = dev->data->dev_private; 715 struct rte_eth_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 716 717 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 718 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 719 return 0; 720 721 if (!hw->opened) 722 return 0; 723 hw->opened = 0; 724 725 /* reset the NIC */ 726 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 727 VIRTIO_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 728 if (intr_conf->rxq) 729 virtio_queues_unbind_intr(dev); 730 731 if (intr_conf->lsc || intr_conf->rxq) { 732 virtio_intr_disable(dev); 733 rte_intr_efd_disable(dev->intr_handle); 734 rte_intr_vec_list_free(dev->intr_handle); 735 } 736 737 virtio_reset(hw); 738 virtio_dev_free_mbufs(dev); 739 virtio_free_queues(hw); 740 741 return VIRTIO_OPS(hw)->dev_close(hw); 742 } 743 744 static int 745 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 746 { 747 struct virtio_hw *hw = dev->data->dev_private; 748 struct virtio_pmd_ctrl ctrl; 749 int dlen[1]; 750 int ret; 751 752 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 753 PMD_INIT_LOG(INFO, "host does not support rx control"); 754 return -ENOTSUP; 755 } 756 757 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 758 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 759 ctrl.data[0] = 1; 760 dlen[0] = 1; 761 762 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 763 if (ret) { 764 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 765 return -EAGAIN; 766 } 767 768 return 0; 769 } 770 771 static int 772 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 773 { 774 struct virtio_hw *hw = dev->data->dev_private; 775 struct virtio_pmd_ctrl ctrl; 776 int dlen[1]; 777 int ret; 778 779 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 780 PMD_INIT_LOG(INFO, "host does not support rx control"); 781 return -ENOTSUP; 782 } 783 784 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 785 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 786 ctrl.data[0] = 0; 787 dlen[0] = 1; 788 789 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 790 if (ret) { 791 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 792 return -EAGAIN; 793 } 794 795 return 0; 796 } 797 798 static int 799 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 800 { 801 struct virtio_hw *hw = dev->data->dev_private; 802 struct virtio_pmd_ctrl ctrl; 803 int dlen[1]; 804 int ret; 805 806 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 807 PMD_INIT_LOG(INFO, "host does not support rx control"); 808 return -ENOTSUP; 809 } 810 811 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 812 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 813 ctrl.data[0] = 1; 814 dlen[0] = 1; 815 816 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 817 if (ret) { 818 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 819 return -EAGAIN; 820 } 821 822 return 0; 823 } 824 825 static int 826 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 827 { 828 struct virtio_hw *hw = dev->data->dev_private; 829 struct virtio_pmd_ctrl ctrl; 830 int dlen[1]; 831 int ret; 832 833 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 834 PMD_INIT_LOG(INFO, "host does not support rx control"); 835 return -ENOTSUP; 836 } 837 838 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 839 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 840 ctrl.data[0] = 0; 841 dlen[0] = 1; 842 843 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 844 if (ret) { 845 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 846 return -EAGAIN; 847 } 848 849 return 0; 850 } 851 852 uint16_t 853 virtio_rx_mem_pool_buf_size(struct rte_mempool *mp) 854 { 855 return rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM; 856 } 857 858 bool 859 virtio_rx_check_scatter(uint16_t max_rx_pkt_len, uint16_t rx_buf_size, 860 bool rx_scatter_enabled, const char **error) 861 { 862 if (!rx_scatter_enabled && max_rx_pkt_len > rx_buf_size) { 863 *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small"; 864 return false; 865 } 866 867 return true; 868 } 869 870 static bool 871 virtio_check_scatter_on_all_rx_queues(struct rte_eth_dev *dev, 872 uint16_t frame_size) 873 { 874 struct virtio_hw *hw = dev->data->dev_private; 875 struct virtnet_rx *rxvq; 876 struct virtqueue *vq; 877 unsigned int qidx; 878 uint16_t buf_size; 879 const char *error; 880 881 if (hw->vqs == NULL) 882 return true; 883 884 for (qidx = 0; qidx < hw->max_queue_pairs; qidx++) { 885 vq = hw->vqs[2 * qidx + VTNET_SQ_RQ_QUEUE_IDX]; 886 if (vq == NULL) 887 continue; 888 889 rxvq = &vq->rxq; 890 if (rxvq->mpool == NULL) 891 continue; 892 buf_size = virtio_rx_mem_pool_buf_size(rxvq->mpool); 893 894 if (!virtio_rx_check_scatter(frame_size, buf_size, 895 hw->rx_ol_scatter, &error)) { 896 PMD_INIT_LOG(ERR, "MTU check for RxQ %u failed: %s", 897 qidx, error); 898 return false; 899 } 900 } 901 902 return true; 903 } 904 905 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 906 static int 907 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 908 { 909 struct virtio_hw *hw = dev->data->dev_private; 910 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 911 hw->vtnet_hdr_size; 912 uint32_t frame_size = mtu + ether_hdr_len; 913 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 914 915 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 916 917 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 918 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 919 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 920 return -EINVAL; 921 } 922 923 if (!virtio_check_scatter_on_all_rx_queues(dev, frame_size)) { 924 PMD_INIT_LOG(ERR, "MTU vs Rx scatter and Rx buffers check failed"); 925 return -EINVAL; 926 } 927 928 hw->max_rx_pkt_len = frame_size; 929 930 return 0; 931 } 932 933 static int 934 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 935 { 936 struct virtio_hw *hw = dev->data->dev_private; 937 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 938 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 939 940 virtqueue_enable_intr(vq); 941 virtio_mb(hw->weak_barriers); 942 return 0; 943 } 944 945 static int 946 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 947 { 948 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 949 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 950 951 virtqueue_disable_intr(vq); 952 return 0; 953 } 954 955 /* 956 * dev_ops for virtio, bare necessities for basic operation 957 */ 958 static const struct eth_dev_ops virtio_eth_dev_ops = { 959 .dev_configure = virtio_dev_configure, 960 .dev_start = virtio_dev_start, 961 .dev_stop = virtio_dev_stop, 962 .dev_close = virtio_dev_close, 963 .promiscuous_enable = virtio_dev_promiscuous_enable, 964 .promiscuous_disable = virtio_dev_promiscuous_disable, 965 .allmulticast_enable = virtio_dev_allmulticast_enable, 966 .allmulticast_disable = virtio_dev_allmulticast_disable, 967 .mtu_set = virtio_mtu_set, 968 .dev_infos_get = virtio_dev_info_get, 969 .stats_get = virtio_dev_stats_get, 970 .xstats_get = virtio_dev_xstats_get, 971 .xstats_get_names = virtio_dev_xstats_get_names, 972 .stats_reset = virtio_dev_stats_reset, 973 .xstats_reset = virtio_dev_stats_reset, 974 .link_update = virtio_dev_link_update, 975 .vlan_offload_set = virtio_dev_vlan_offload_set, 976 .rx_queue_setup = virtio_dev_rx_queue_setup, 977 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 978 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 979 .tx_queue_setup = virtio_dev_tx_queue_setup, 980 /* collect stats per queue */ 981 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 982 .vlan_filter_set = virtio_vlan_filter_set, 983 .mac_addr_add = virtio_mac_addr_add, 984 .mac_addr_remove = virtio_mac_addr_remove, 985 .mac_addr_set = virtio_mac_addr_set, 986 }; 987 988 /* 989 * dev_ops for virtio-user in secondary processes, as we just have 990 * some limited supports currently. 991 */ 992 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 993 .dev_infos_get = virtio_dev_info_get, 994 .stats_get = virtio_dev_stats_get, 995 .xstats_get = virtio_dev_xstats_get, 996 .xstats_get_names = virtio_dev_xstats_get_names, 997 .stats_reset = virtio_dev_stats_reset, 998 .xstats_reset = virtio_dev_stats_reset, 999 /* collect stats per queue */ 1000 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 1001 }; 1002 1003 static void 1004 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1005 { 1006 unsigned i; 1007 1008 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1009 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1010 if (txvq == NULL) 1011 continue; 1012 1013 stats->opackets += txvq->stats.packets; 1014 stats->obytes += txvq->stats.bytes; 1015 1016 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 1017 stats->q_opackets[i] = txvq->stats.packets; 1018 stats->q_obytes[i] = txvq->stats.bytes; 1019 } 1020 } 1021 1022 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1023 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1024 if (rxvq == NULL) 1025 continue; 1026 1027 stats->ipackets += rxvq->stats.packets; 1028 stats->ibytes += rxvq->stats.bytes; 1029 stats->ierrors += rxvq->stats.errors; 1030 1031 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 1032 stats->q_ipackets[i] = rxvq->stats.packets; 1033 stats->q_ibytes[i] = rxvq->stats.bytes; 1034 } 1035 } 1036 1037 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 1038 } 1039 1040 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 1041 struct rte_eth_xstat_name *xstats_names, 1042 __rte_unused unsigned limit) 1043 { 1044 unsigned i; 1045 unsigned count = 0; 1046 unsigned t; 1047 1048 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1049 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1050 1051 if (xstats_names != NULL) { 1052 /* Note: limit checked in rte_eth_xstats_names() */ 1053 1054 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1055 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1056 if (rxvq == NULL) 1057 continue; 1058 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1059 snprintf(xstats_names[count].name, 1060 sizeof(xstats_names[count].name), 1061 "rx_q%u_%s", i, 1062 rte_virtio_rxq_stat_strings[t].name); 1063 count++; 1064 } 1065 } 1066 1067 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1068 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1069 if (txvq == NULL) 1070 continue; 1071 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1072 snprintf(xstats_names[count].name, 1073 sizeof(xstats_names[count].name), 1074 "tx_q%u_%s", i, 1075 rte_virtio_txq_stat_strings[t].name); 1076 count++; 1077 } 1078 } 1079 return count; 1080 } 1081 return nstats; 1082 } 1083 1084 static int 1085 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1086 unsigned n) 1087 { 1088 unsigned i; 1089 unsigned count = 0; 1090 1091 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1092 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1093 1094 if (n < nstats) 1095 return nstats; 1096 1097 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1098 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1099 1100 if (rxvq == NULL) 1101 continue; 1102 1103 unsigned t; 1104 1105 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1106 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1107 rte_virtio_rxq_stat_strings[t].offset); 1108 xstats[count].id = count; 1109 count++; 1110 } 1111 } 1112 1113 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1114 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1115 1116 if (txvq == NULL) 1117 continue; 1118 1119 unsigned t; 1120 1121 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1122 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1123 rte_virtio_txq_stat_strings[t].offset); 1124 xstats[count].id = count; 1125 count++; 1126 } 1127 } 1128 1129 return count; 1130 } 1131 1132 static int 1133 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1134 { 1135 virtio_update_stats(dev, stats); 1136 1137 return 0; 1138 } 1139 1140 static int 1141 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1142 { 1143 unsigned int i; 1144 1145 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1146 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1147 if (txvq == NULL) 1148 continue; 1149 1150 txvq->stats.packets = 0; 1151 txvq->stats.bytes = 0; 1152 txvq->stats.multicast = 0; 1153 txvq->stats.broadcast = 0; 1154 memset(txvq->stats.size_bins, 0, 1155 sizeof(txvq->stats.size_bins[0]) * 8); 1156 } 1157 1158 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1159 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1160 if (rxvq == NULL) 1161 continue; 1162 1163 rxvq->stats.packets = 0; 1164 rxvq->stats.bytes = 0; 1165 rxvq->stats.errors = 0; 1166 rxvq->stats.multicast = 0; 1167 rxvq->stats.broadcast = 0; 1168 memset(rxvq->stats.size_bins, 0, 1169 sizeof(rxvq->stats.size_bins[0]) * 8); 1170 } 1171 1172 return 0; 1173 } 1174 1175 static void 1176 virtio_set_hwaddr(struct virtio_hw *hw) 1177 { 1178 virtio_write_dev_config(hw, 1179 offsetof(struct virtio_net_config, mac), 1180 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1181 } 1182 1183 static void 1184 virtio_get_hwaddr(struct virtio_hw *hw) 1185 { 1186 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) { 1187 virtio_read_dev_config(hw, 1188 offsetof(struct virtio_net_config, mac), 1189 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1190 } else { 1191 rte_eth_random_addr(&hw->mac_addr[0]); 1192 virtio_set_hwaddr(hw); 1193 } 1194 } 1195 1196 static int 1197 virtio_mac_table_set(struct virtio_hw *hw, 1198 const struct virtio_net_ctrl_mac *uc, 1199 const struct virtio_net_ctrl_mac *mc) 1200 { 1201 struct virtio_pmd_ctrl ctrl; 1202 int err, len[2]; 1203 1204 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1205 PMD_DRV_LOG(INFO, "host does not support mac table"); 1206 return -1; 1207 } 1208 1209 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1210 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1211 1212 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1213 memcpy(ctrl.data, uc, len[0]); 1214 1215 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 1216 memcpy(ctrl.data + len[0], mc, len[1]); 1217 1218 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1219 if (err != 0) 1220 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1221 return err; 1222 } 1223 1224 static int 1225 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 1226 uint32_t index, uint32_t vmdq __rte_unused) 1227 { 1228 struct virtio_hw *hw = dev->data->dev_private; 1229 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 1230 unsigned int i; 1231 struct virtio_net_ctrl_mac *uc, *mc; 1232 1233 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1234 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1235 return -EINVAL; 1236 } 1237 1238 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1239 sizeof(uc->entries)); 1240 uc->entries = 0; 1241 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1242 sizeof(mc->entries)); 1243 mc->entries = 0; 1244 1245 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1246 const struct rte_ether_addr *addr 1247 = (i == index) ? mac_addr : addrs + i; 1248 struct virtio_net_ctrl_mac *tbl 1249 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1250 1251 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1252 } 1253 1254 return virtio_mac_table_set(hw, uc, mc); 1255 } 1256 1257 static void 1258 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1259 { 1260 struct virtio_hw *hw = dev->data->dev_private; 1261 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1262 struct virtio_net_ctrl_mac *uc, *mc; 1263 unsigned int i; 1264 1265 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1266 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1267 return; 1268 } 1269 1270 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1271 sizeof(uc->entries)); 1272 uc->entries = 0; 1273 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1274 sizeof(mc->entries)); 1275 mc->entries = 0; 1276 1277 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1278 struct virtio_net_ctrl_mac *tbl; 1279 1280 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1281 continue; 1282 1283 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1284 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1285 RTE_ETHER_ADDR_LEN); 1286 } 1287 1288 virtio_mac_table_set(hw, uc, mc); 1289 } 1290 1291 static int 1292 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1293 { 1294 struct virtio_hw *hw = dev->data->dev_private; 1295 1296 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1297 1298 /* Use atomic update if available */ 1299 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1300 struct virtio_pmd_ctrl ctrl; 1301 int len = RTE_ETHER_ADDR_LEN; 1302 1303 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1304 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1305 1306 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1307 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1308 } 1309 1310 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC)) 1311 return -ENOTSUP; 1312 1313 virtio_set_hwaddr(hw); 1314 return 0; 1315 } 1316 1317 static int 1318 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1319 { 1320 struct virtio_hw *hw = dev->data->dev_private; 1321 struct virtio_pmd_ctrl ctrl; 1322 int len; 1323 1324 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1325 return -ENOTSUP; 1326 1327 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1328 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1329 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1330 len = sizeof(vlan_id); 1331 1332 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1333 } 1334 1335 static int 1336 virtio_intr_unmask(struct rte_eth_dev *dev) 1337 { 1338 struct virtio_hw *hw = dev->data->dev_private; 1339 1340 if (rte_intr_ack(dev->intr_handle) < 0) 1341 return -1; 1342 1343 if (VIRTIO_OPS(hw)->intr_detect) 1344 VIRTIO_OPS(hw)->intr_detect(hw); 1345 1346 return 0; 1347 } 1348 1349 static int 1350 virtio_intr_enable(struct rte_eth_dev *dev) 1351 { 1352 struct virtio_hw *hw = dev->data->dev_private; 1353 1354 if (rte_intr_enable(dev->intr_handle) < 0) 1355 return -1; 1356 1357 if (VIRTIO_OPS(hw)->intr_detect) 1358 VIRTIO_OPS(hw)->intr_detect(hw); 1359 1360 return 0; 1361 } 1362 1363 static int 1364 virtio_intr_disable(struct rte_eth_dev *dev) 1365 { 1366 struct virtio_hw *hw = dev->data->dev_private; 1367 1368 if (rte_intr_disable(dev->intr_handle) < 0) 1369 return -1; 1370 1371 if (VIRTIO_OPS(hw)->intr_detect) 1372 VIRTIO_OPS(hw)->intr_detect(hw); 1373 1374 return 0; 1375 } 1376 1377 static int 1378 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1379 { 1380 uint64_t host_features; 1381 1382 /* Prepare guest_features: feature that driver wants to support */ 1383 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1384 req_features); 1385 1386 /* Read device(host) feature bits */ 1387 host_features = VIRTIO_OPS(hw)->get_features(hw); 1388 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1389 host_features); 1390 1391 /* If supported, ensure MTU value is valid before acknowledging it. */ 1392 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1393 struct virtio_net_config config; 1394 1395 virtio_read_dev_config(hw, 1396 offsetof(struct virtio_net_config, mtu), 1397 &config.mtu, sizeof(config.mtu)); 1398 1399 if (config.mtu < RTE_ETHER_MIN_MTU) 1400 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1401 } 1402 1403 /* 1404 * Negotiate features: Subset of device feature bits are written back 1405 * guest feature bits. 1406 */ 1407 hw->guest_features = req_features; 1408 hw->guest_features = virtio_negotiate_features(hw, host_features); 1409 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1410 hw->guest_features); 1411 1412 if (VIRTIO_OPS(hw)->features_ok(hw) < 0) 1413 return -1; 1414 1415 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) { 1416 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1417 1418 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1419 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!"); 1420 return -1; 1421 } 1422 } 1423 1424 hw->req_guest_features = req_features; 1425 1426 return 0; 1427 } 1428 1429 int 1430 virtio_dev_pause(struct rte_eth_dev *dev) 1431 { 1432 struct virtio_hw *hw = dev->data->dev_private; 1433 1434 rte_spinlock_lock(&hw->state_lock); 1435 1436 if (hw->started == 0) { 1437 /* Device is just stopped. */ 1438 rte_spinlock_unlock(&hw->state_lock); 1439 return -1; 1440 } 1441 hw->started = 0; 1442 /* 1443 * Prevent the worker threads from touching queues to avoid contention, 1444 * 1 ms should be enough for the ongoing Tx function to finish. 1445 */ 1446 rte_delay_ms(1); 1447 return 0; 1448 } 1449 1450 /* 1451 * Recover hw state to let the worker threads continue. 1452 */ 1453 void 1454 virtio_dev_resume(struct rte_eth_dev *dev) 1455 { 1456 struct virtio_hw *hw = dev->data->dev_private; 1457 1458 hw->started = 1; 1459 rte_spinlock_unlock(&hw->state_lock); 1460 } 1461 1462 /* 1463 * Should be called only after device is paused. 1464 */ 1465 int 1466 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1467 int nb_pkts) 1468 { 1469 struct virtio_hw *hw = dev->data->dev_private; 1470 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1471 int ret; 1472 1473 hw->inject_pkts = tx_pkts; 1474 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1475 hw->inject_pkts = NULL; 1476 1477 return ret; 1478 } 1479 1480 static void 1481 virtio_notify_peers(struct rte_eth_dev *dev) 1482 { 1483 struct virtio_hw *hw = dev->data->dev_private; 1484 struct virtnet_rx *rxvq; 1485 struct rte_mbuf *rarp_mbuf; 1486 1487 if (!dev->data->rx_queues) 1488 return; 1489 1490 rxvq = dev->data->rx_queues[0]; 1491 if (!rxvq) 1492 return; 1493 1494 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1495 (struct rte_ether_addr *)hw->mac_addr); 1496 if (rarp_mbuf == NULL) { 1497 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1498 return; 1499 } 1500 1501 /* If virtio port just stopped, no need to send RARP */ 1502 if (virtio_dev_pause(dev) < 0) { 1503 rte_pktmbuf_free(rarp_mbuf); 1504 return; 1505 } 1506 1507 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1508 virtio_dev_resume(dev); 1509 } 1510 1511 static void 1512 virtio_ack_link_announce(struct rte_eth_dev *dev) 1513 { 1514 struct virtio_hw *hw = dev->data->dev_private; 1515 struct virtio_pmd_ctrl ctrl; 1516 1517 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1518 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1519 1520 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1521 } 1522 1523 /* 1524 * Process virtio config changed interrupt. Call the callback 1525 * if link state changed, generate gratuitous RARP packet if 1526 * the status indicates an ANNOUNCE. 1527 */ 1528 void 1529 virtio_interrupt_handler(void *param) 1530 { 1531 struct rte_eth_dev *dev = param; 1532 struct virtio_hw *hw = dev->data->dev_private; 1533 uint8_t isr; 1534 uint16_t status; 1535 1536 /* Read interrupt status which clears interrupt */ 1537 isr = virtio_get_isr(hw); 1538 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1539 1540 if (virtio_intr_unmask(dev) < 0) 1541 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1542 1543 if (isr & VIRTIO_ISR_CONFIG) { 1544 if (virtio_dev_link_update(dev, 0) == 0) 1545 rte_eth_dev_callback_process(dev, 1546 RTE_ETH_EVENT_INTR_LSC, 1547 NULL); 1548 1549 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1550 virtio_read_dev_config(hw, 1551 offsetof(struct virtio_net_config, status), 1552 &status, sizeof(status)); 1553 if (status & VIRTIO_NET_S_ANNOUNCE) { 1554 virtio_notify_peers(dev); 1555 if (hw->cvq) 1556 virtio_ack_link_announce(dev); 1557 } 1558 } 1559 } 1560 } 1561 1562 /* set rx and tx handlers according to what is supported */ 1563 static void 1564 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1565 { 1566 struct virtio_hw *hw = eth_dev->data->dev_private; 1567 1568 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1569 if (virtio_with_packed_queue(hw)) { 1570 PMD_INIT_LOG(INFO, 1571 "virtio: using packed ring %s Tx path on port %u", 1572 hw->use_vec_tx ? "vectorized" : "standard", 1573 eth_dev->data->port_id); 1574 if (hw->use_vec_tx) 1575 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1576 else 1577 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1578 } else { 1579 if (hw->use_inorder_tx) { 1580 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1581 eth_dev->data->port_id); 1582 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1583 } else { 1584 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1585 eth_dev->data->port_id); 1586 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1587 } 1588 } 1589 1590 if (virtio_with_packed_queue(hw)) { 1591 if (hw->use_vec_rx) { 1592 PMD_INIT_LOG(INFO, 1593 "virtio: using packed ring vectorized Rx path on port %u", 1594 eth_dev->data->port_id); 1595 eth_dev->rx_pkt_burst = 1596 &virtio_recv_pkts_packed_vec; 1597 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1598 PMD_INIT_LOG(INFO, 1599 "virtio: using packed ring mergeable buffer Rx path on port %u", 1600 eth_dev->data->port_id); 1601 eth_dev->rx_pkt_burst = 1602 &virtio_recv_mergeable_pkts_packed; 1603 } else { 1604 PMD_INIT_LOG(INFO, 1605 "virtio: using packed ring standard Rx path on port %u", 1606 eth_dev->data->port_id); 1607 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1608 } 1609 } else { 1610 if (hw->use_vec_rx) { 1611 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1612 eth_dev->data->port_id); 1613 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1614 } else if (hw->use_inorder_rx) { 1615 PMD_INIT_LOG(INFO, 1616 "virtio: using inorder Rx path on port %u", 1617 eth_dev->data->port_id); 1618 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1619 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1620 PMD_INIT_LOG(INFO, 1621 "virtio: using mergeable buffer Rx path on port %u", 1622 eth_dev->data->port_id); 1623 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1624 } else { 1625 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1626 eth_dev->data->port_id); 1627 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1628 } 1629 } 1630 1631 } 1632 1633 /* Only support 1:1 queue/interrupt mapping so far. 1634 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1635 * interrupt vectors (<N+1). 1636 */ 1637 static int 1638 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1639 { 1640 uint32_t i; 1641 struct virtio_hw *hw = dev->data->dev_private; 1642 1643 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1644 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1645 if (rte_intr_vec_list_index_set(dev->intr_handle, i, 1646 i + 1)) 1647 return -rte_errno; 1648 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1649 VIRTIO_MSI_NO_VECTOR) { 1650 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1651 return -EBUSY; 1652 } 1653 } 1654 1655 return 0; 1656 } 1657 1658 static void 1659 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1660 { 1661 uint32_t i; 1662 struct virtio_hw *hw = dev->data->dev_private; 1663 1664 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1665 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1666 VIRTIO_OPS(hw)->set_queue_irq(hw, 1667 hw->vqs[i * VTNET_CQ], 1668 VIRTIO_MSI_NO_VECTOR); 1669 } 1670 1671 static int 1672 virtio_configure_intr(struct rte_eth_dev *dev) 1673 { 1674 struct virtio_hw *hw = dev->data->dev_private; 1675 1676 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1677 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1678 return -ENOTSUP; 1679 } 1680 1681 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1682 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1683 return -1; 1684 } 1685 1686 if (rte_intr_vec_list_alloc(dev->intr_handle, "intr_vec", 1687 hw->max_queue_pairs)) { 1688 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1689 hw->max_queue_pairs); 1690 return -ENOMEM; 1691 } 1692 1693 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 1694 /* Re-register callback to update max_intr */ 1695 rte_intr_callback_unregister(dev->intr_handle, 1696 virtio_interrupt_handler, 1697 dev); 1698 rte_intr_callback_register(dev->intr_handle, 1699 virtio_interrupt_handler, 1700 dev); 1701 } 1702 1703 /* DO NOT try to remove this! This function will enable msix, or QEMU 1704 * will encounter SIGSEGV when DRIVER_OK is sent. 1705 * And for legacy devices, this should be done before queue/vec binding 1706 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1707 * (22) will be ignored. 1708 */ 1709 if (virtio_intr_enable(dev) < 0) { 1710 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1711 return -1; 1712 } 1713 1714 if (virtio_queues_bind_intr(dev) < 0) { 1715 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1716 return -1; 1717 } 1718 1719 return 0; 1720 } 1721 #define DUPLEX_UNKNOWN 0xff 1722 /* reset device and renegotiate features if needed */ 1723 static int 1724 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1725 { 1726 struct virtio_hw *hw = eth_dev->data->dev_private; 1727 struct virtio_net_config *config; 1728 struct virtio_net_config local_config; 1729 int ret; 1730 1731 /* Reset the device although not necessary at startup */ 1732 virtio_reset(hw); 1733 1734 if (hw->vqs) { 1735 virtio_dev_free_mbufs(eth_dev); 1736 virtio_free_queues(hw); 1737 } 1738 1739 /* Tell the host we've noticed this device. */ 1740 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1741 1742 /* Tell the host we've known how to drive the device. */ 1743 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1744 if (virtio_ethdev_negotiate_features(hw, req_features) < 0) 1745 return -1; 1746 1747 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1748 1749 /* If host does not support both status and MSI-X then disable LSC */ 1750 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc) 1751 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1752 else 1753 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1754 1755 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1756 1757 /* Setting up rx_header size for the device */ 1758 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1759 virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 1760 virtio_with_packed_queue(hw)) 1761 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1762 else 1763 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1764 1765 /* Copy the permanent MAC address to: virtio_hw */ 1766 virtio_get_hwaddr(hw); 1767 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1768 ð_dev->data->mac_addrs[0]); 1769 PMD_INIT_LOG(DEBUG, 1770 "PORT MAC: " RTE_ETHER_ADDR_PRT_FMT, 1771 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1772 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1773 1774 if (hw->speed == RTE_ETH_SPEED_NUM_UNKNOWN) { 1775 if (virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) { 1776 config = &local_config; 1777 virtio_read_dev_config(hw, 1778 offsetof(struct virtio_net_config, speed), 1779 &config->speed, sizeof(config->speed)); 1780 virtio_read_dev_config(hw, 1781 offsetof(struct virtio_net_config, duplex), 1782 &config->duplex, sizeof(config->duplex)); 1783 hw->speed = config->speed; 1784 hw->duplex = config->duplex; 1785 } 1786 } 1787 if (hw->duplex == DUPLEX_UNKNOWN) 1788 hw->duplex = RTE_ETH_LINK_FULL_DUPLEX; 1789 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1790 hw->speed, hw->duplex); 1791 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1792 config = &local_config; 1793 1794 virtio_read_dev_config(hw, 1795 offsetof(struct virtio_net_config, mac), 1796 &config->mac, sizeof(config->mac)); 1797 1798 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1799 virtio_read_dev_config(hw, 1800 offsetof(struct virtio_net_config, status), 1801 &config->status, sizeof(config->status)); 1802 } else { 1803 PMD_INIT_LOG(DEBUG, 1804 "VIRTIO_NET_F_STATUS is not supported"); 1805 config->status = 0; 1806 } 1807 1808 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ)) { 1809 virtio_read_dev_config(hw, 1810 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1811 &config->max_virtqueue_pairs, 1812 sizeof(config->max_virtqueue_pairs)); 1813 } else { 1814 PMD_INIT_LOG(DEBUG, 1815 "VIRTIO_NET_F_MQ is not supported"); 1816 config->max_virtqueue_pairs = 1; 1817 } 1818 1819 hw->max_queue_pairs = config->max_virtqueue_pairs; 1820 1821 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) { 1822 virtio_read_dev_config(hw, 1823 offsetof(struct virtio_net_config, mtu), 1824 &config->mtu, 1825 sizeof(config->mtu)); 1826 1827 /* 1828 * MTU value has already been checked at negotiation 1829 * time, but check again in case it has changed since 1830 * then, which should not happen. 1831 */ 1832 if (config->mtu < RTE_ETHER_MIN_MTU) { 1833 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1834 config->mtu); 1835 return -1; 1836 } 1837 1838 hw->max_mtu = config->mtu; 1839 /* Set initial MTU to maximum one supported by vhost */ 1840 eth_dev->data->mtu = config->mtu; 1841 1842 } else { 1843 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1844 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1845 } 1846 1847 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1848 config->max_virtqueue_pairs); 1849 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1850 PMD_INIT_LOG(DEBUG, 1851 "PORT MAC: " RTE_ETHER_ADDR_PRT_FMT, 1852 config->mac[0], config->mac[1], 1853 config->mac[2], config->mac[3], 1854 config->mac[4], config->mac[5]); 1855 } else { 1856 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1857 hw->max_queue_pairs = 1; 1858 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1859 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1860 } 1861 1862 ret = virtio_alloc_queues(eth_dev); 1863 if (ret < 0) 1864 return ret; 1865 1866 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1867 if (virtio_configure_intr(eth_dev) < 0) { 1868 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1869 virtio_free_queues(hw); 1870 return -1; 1871 } 1872 } 1873 1874 virtio_reinit_complete(hw); 1875 1876 return 0; 1877 } 1878 1879 /* 1880 * This function is based on probe() function in virtio_pci.c 1881 * It returns 0 on success. 1882 */ 1883 int 1884 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1885 { 1886 struct virtio_hw *hw = eth_dev->data->dev_private; 1887 uint32_t speed = RTE_ETH_SPEED_NUM_UNKNOWN; 1888 int vectorized = 0; 1889 int ret; 1890 1891 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1892 PMD_INIT_LOG(ERR, 1893 "Not sufficient headroom required = %d, avail = %d", 1894 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1895 RTE_PKTMBUF_HEADROOM); 1896 1897 return -1; 1898 } 1899 1900 eth_dev->dev_ops = &virtio_eth_dev_ops; 1901 1902 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1903 set_rxtx_funcs(eth_dev); 1904 return 0; 1905 } 1906 1907 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized); 1908 if (ret < 0) 1909 return ret; 1910 hw->speed = speed; 1911 hw->duplex = DUPLEX_UNKNOWN; 1912 1913 /* Allocate memory for storing MAC addresses */ 1914 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1915 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1916 if (eth_dev->data->mac_addrs == NULL) { 1917 PMD_INIT_LOG(ERR, 1918 "Failed to allocate %d bytes needed to store MAC addresses", 1919 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1920 return -ENOMEM; 1921 } 1922 1923 rte_spinlock_init(&hw->state_lock); 1924 1925 /* reset device and negotiate default features */ 1926 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1927 if (ret < 0) 1928 goto err_virtio_init; 1929 1930 if (vectorized) { 1931 if (!virtio_with_packed_queue(hw)) { 1932 hw->use_vec_rx = 1; 1933 } else { 1934 #if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM) 1935 hw->use_vec_rx = 1; 1936 hw->use_vec_tx = 1; 1937 #else 1938 PMD_DRV_LOG(INFO, 1939 "building environment do not support packed ring vectorized"); 1940 #endif 1941 } 1942 } 1943 1944 hw->opened = 1; 1945 1946 return 0; 1947 1948 err_virtio_init: 1949 rte_free(eth_dev->data->mac_addrs); 1950 eth_dev->data->mac_addrs = NULL; 1951 return ret; 1952 } 1953 1954 static uint32_t 1955 virtio_dev_speed_capa_get(uint32_t speed) 1956 { 1957 switch (speed) { 1958 case RTE_ETH_SPEED_NUM_10G: 1959 return RTE_ETH_LINK_SPEED_10G; 1960 case RTE_ETH_SPEED_NUM_20G: 1961 return RTE_ETH_LINK_SPEED_20G; 1962 case RTE_ETH_SPEED_NUM_25G: 1963 return RTE_ETH_LINK_SPEED_25G; 1964 case RTE_ETH_SPEED_NUM_40G: 1965 return RTE_ETH_LINK_SPEED_40G; 1966 case RTE_ETH_SPEED_NUM_50G: 1967 return RTE_ETH_LINK_SPEED_50G; 1968 case RTE_ETH_SPEED_NUM_56G: 1969 return RTE_ETH_LINK_SPEED_56G; 1970 case RTE_ETH_SPEED_NUM_100G: 1971 return RTE_ETH_LINK_SPEED_100G; 1972 case RTE_ETH_SPEED_NUM_200G: 1973 return RTE_ETH_LINK_SPEED_200G; 1974 default: 1975 return 0; 1976 } 1977 } 1978 1979 static int vectorized_check_handler(__rte_unused const char *key, 1980 const char *value, void *ret_val) 1981 { 1982 if (strcmp(value, "1") == 0) 1983 *(int *)ret_val = 1; 1984 else 1985 *(int *)ret_val = 0; 1986 1987 return 0; 1988 } 1989 1990 #define VIRTIO_ARG_SPEED "speed" 1991 #define VIRTIO_ARG_VECTORIZED "vectorized" 1992 1993 static int 1994 link_speed_handler(const char *key __rte_unused, 1995 const char *value, void *ret_val) 1996 { 1997 uint32_t val; 1998 if (!value || !ret_val) 1999 return -EINVAL; 2000 val = strtoul(value, NULL, 0); 2001 /* validate input */ 2002 if (virtio_dev_speed_capa_get(val) == 0) 2003 return -EINVAL; 2004 *(uint32_t *)ret_val = val; 2005 2006 return 0; 2007 } 2008 2009 2010 static int 2011 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized) 2012 { 2013 struct rte_kvargs *kvlist; 2014 int ret = 0; 2015 2016 if (devargs == NULL) 2017 return 0; 2018 2019 kvlist = rte_kvargs_parse(devargs->args, NULL); 2020 if (kvlist == NULL) { 2021 PMD_INIT_LOG(ERR, "error when parsing param"); 2022 return 0; 2023 } 2024 2025 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2026 ret = rte_kvargs_process(kvlist, 2027 VIRTIO_ARG_SPEED, 2028 link_speed_handler, speed); 2029 if (ret < 0) { 2030 PMD_INIT_LOG(ERR, "Failed to parse %s", 2031 VIRTIO_ARG_SPEED); 2032 goto exit; 2033 } 2034 } 2035 2036 if (vectorized && 2037 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2038 ret = rte_kvargs_process(kvlist, 2039 VIRTIO_ARG_VECTORIZED, 2040 vectorized_check_handler, vectorized); 2041 if (ret < 0) { 2042 PMD_INIT_LOG(ERR, "Failed to parse %s", 2043 VIRTIO_ARG_VECTORIZED); 2044 goto exit; 2045 } 2046 } 2047 2048 exit: 2049 rte_kvargs_free(kvlist); 2050 return ret; 2051 } 2052 2053 static uint8_t 2054 rx_offload_enabled(struct virtio_hw *hw) 2055 { 2056 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2057 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2058 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2059 } 2060 2061 static uint8_t 2062 tx_offload_enabled(struct virtio_hw *hw) 2063 { 2064 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) || 2065 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2066 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2067 } 2068 2069 /* 2070 * Configure virtio device 2071 * It returns 0 on success. 2072 */ 2073 static int 2074 virtio_dev_configure(struct rte_eth_dev *dev) 2075 { 2076 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2077 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2078 struct virtio_hw *hw = dev->data->dev_private; 2079 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2080 hw->vtnet_hdr_size; 2081 uint64_t rx_offloads = rxmode->offloads; 2082 uint64_t tx_offloads = txmode->offloads; 2083 uint64_t req_features; 2084 int ret; 2085 2086 PMD_INIT_LOG(DEBUG, "configure"); 2087 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2088 2089 if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE) { 2090 PMD_DRV_LOG(ERR, 2091 "Unsupported Rx multi queue mode %d", 2092 rxmode->mq_mode); 2093 return -EINVAL; 2094 } 2095 2096 if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) { 2097 PMD_DRV_LOG(ERR, 2098 "Unsupported Tx multi queue mode %d", 2099 txmode->mq_mode); 2100 return -EINVAL; 2101 } 2102 2103 if (dev->data->dev_conf.intr_conf.rxq) { 2104 ret = virtio_init_device(dev, hw->req_guest_features); 2105 if (ret < 0) 2106 return ret; 2107 } 2108 2109 if (rxmode->mtu > hw->max_mtu) 2110 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2111 2112 hw->max_rx_pkt_len = ether_hdr_len + rxmode->mtu; 2113 2114 if (rx_offloads & (RTE_ETH_RX_OFFLOAD_UDP_CKSUM | 2115 RTE_ETH_RX_OFFLOAD_TCP_CKSUM)) 2116 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2117 2118 if (rx_offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) 2119 req_features |= 2120 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2121 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2122 2123 if (tx_offloads & (RTE_ETH_TX_OFFLOAD_UDP_CKSUM | 2124 RTE_ETH_TX_OFFLOAD_TCP_CKSUM)) 2125 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2126 2127 if (tx_offloads & RTE_ETH_TX_OFFLOAD_TCP_TSO) 2128 req_features |= 2129 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2130 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2131 2132 /* if request features changed, reinit the device */ 2133 if (req_features != hw->req_guest_features) { 2134 ret = virtio_init_device(dev, req_features); 2135 if (ret < 0) 2136 return ret; 2137 } 2138 2139 if ((rx_offloads & (RTE_ETH_RX_OFFLOAD_UDP_CKSUM | 2140 RTE_ETH_RX_OFFLOAD_TCP_CKSUM)) && 2141 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2142 PMD_DRV_LOG(ERR, 2143 "rx checksum not available on this host"); 2144 return -ENOTSUP; 2145 } 2146 2147 if ((rx_offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) && 2148 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2149 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2150 PMD_DRV_LOG(ERR, 2151 "Large Receive Offload not available on this host"); 2152 return -ENOTSUP; 2153 } 2154 2155 /* start control queue */ 2156 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2157 virtio_dev_cq_start(dev); 2158 2159 if (rx_offloads & RTE_ETH_RX_OFFLOAD_VLAN_STRIP) 2160 hw->vlan_strip = 1; 2161 2162 hw->rx_ol_scatter = (rx_offloads & RTE_ETH_RX_OFFLOAD_SCATTER); 2163 2164 if ((rx_offloads & RTE_ETH_RX_OFFLOAD_VLAN_FILTER) && 2165 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2166 PMD_DRV_LOG(ERR, 2167 "vlan filtering not available on this host"); 2168 return -ENOTSUP; 2169 } 2170 2171 hw->has_tx_offload = tx_offload_enabled(hw); 2172 hw->has_rx_offload = rx_offload_enabled(hw); 2173 2174 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2175 /* Enable vector (0) for Link State Intrerrupt */ 2176 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) == 2177 VIRTIO_MSI_NO_VECTOR) { 2178 PMD_DRV_LOG(ERR, "failed to set config vector"); 2179 return -EBUSY; 2180 } 2181 2182 if (virtio_with_packed_queue(hw)) { 2183 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2184 if ((hw->use_vec_rx || hw->use_vec_tx) && 2185 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2186 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2187 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2188 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) { 2189 PMD_DRV_LOG(INFO, 2190 "disabled packed ring vectorized path for requirements not met"); 2191 hw->use_vec_rx = 0; 2192 hw->use_vec_tx = 0; 2193 } 2194 #elif defined(RTE_ARCH_ARM) 2195 if ((hw->use_vec_rx || hw->use_vec_tx) && 2196 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) || 2197 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2198 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2199 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) { 2200 PMD_DRV_LOG(INFO, 2201 "disabled packed ring vectorized path for requirements not met"); 2202 hw->use_vec_rx = 0; 2203 hw->use_vec_tx = 0; 2204 } 2205 #else 2206 hw->use_vec_rx = 0; 2207 hw->use_vec_tx = 0; 2208 #endif 2209 2210 if (hw->use_vec_rx) { 2211 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2212 PMD_DRV_LOG(INFO, 2213 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2214 hw->use_vec_rx = 0; 2215 } 2216 2217 if (rx_offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) { 2218 PMD_DRV_LOG(INFO, 2219 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2220 hw->use_vec_rx = 0; 2221 } 2222 } 2223 } else { 2224 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2225 hw->use_inorder_tx = 1; 2226 hw->use_inorder_rx = 1; 2227 hw->use_vec_rx = 0; 2228 } 2229 2230 if (hw->use_vec_rx) { 2231 #if defined RTE_ARCH_ARM 2232 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2233 PMD_DRV_LOG(INFO, 2234 "disabled split ring vectorized path for requirement not met"); 2235 hw->use_vec_rx = 0; 2236 } 2237 #endif 2238 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2239 PMD_DRV_LOG(INFO, 2240 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2241 hw->use_vec_rx = 0; 2242 } 2243 2244 if (rx_offloads & (RTE_ETH_RX_OFFLOAD_UDP_CKSUM | 2245 RTE_ETH_RX_OFFLOAD_TCP_CKSUM | 2246 RTE_ETH_RX_OFFLOAD_TCP_LRO | 2247 RTE_ETH_RX_OFFLOAD_VLAN_STRIP)) { 2248 PMD_DRV_LOG(INFO, 2249 "disabled split ring vectorized rx for offloading enabled"); 2250 hw->use_vec_rx = 0; 2251 } 2252 2253 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) { 2254 PMD_DRV_LOG(INFO, 2255 "disabled split ring vectorized rx, max SIMD bitwidth too low"); 2256 hw->use_vec_rx = 0; 2257 } 2258 } 2259 } 2260 2261 return 0; 2262 } 2263 2264 2265 static int 2266 virtio_dev_start(struct rte_eth_dev *dev) 2267 { 2268 uint16_t nb_queues, i; 2269 struct virtqueue *vq; 2270 struct virtio_hw *hw = dev->data->dev_private; 2271 int ret; 2272 2273 /* Finish the initialization of the queues */ 2274 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2275 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2276 if (ret < 0) 2277 return ret; 2278 } 2279 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2280 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2281 if (ret < 0) 2282 return ret; 2283 } 2284 2285 /* check if lsc interrupt feature is enabled */ 2286 if (dev->data->dev_conf.intr_conf.lsc) { 2287 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2288 PMD_DRV_LOG(ERR, "link status not supported by host"); 2289 return -ENOTSUP; 2290 } 2291 } 2292 2293 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2294 * in device configure, but it could be unmapped when device is 2295 * stopped. 2296 */ 2297 if (dev->data->dev_conf.intr_conf.lsc || 2298 dev->data->dev_conf.intr_conf.rxq) { 2299 virtio_intr_disable(dev); 2300 2301 /* Setup interrupt callback */ 2302 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2303 rte_intr_callback_register(dev->intr_handle, 2304 virtio_interrupt_handler, 2305 dev); 2306 2307 if (virtio_intr_enable(dev) < 0) { 2308 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2309 return -EIO; 2310 } 2311 } 2312 2313 /*Notify the backend 2314 *Otherwise the tap backend might already stop its queue due to fullness. 2315 *vhost backend will have no chance to be waked up 2316 */ 2317 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2318 if (hw->max_queue_pairs > 1) { 2319 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2320 return -EINVAL; 2321 } 2322 2323 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2324 2325 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2326 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2327 /* Flush the old packets */ 2328 virtqueue_rxvq_flush(vq); 2329 virtqueue_notify(vq); 2330 } 2331 2332 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2333 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2334 virtqueue_notify(vq); 2335 } 2336 2337 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2338 2339 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2340 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2341 VIRTQUEUE_DUMP(vq); 2342 } 2343 2344 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2345 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2346 VIRTQUEUE_DUMP(vq); 2347 } 2348 2349 set_rxtx_funcs(dev); 2350 hw->started = 1; 2351 2352 /* Initialize Link state */ 2353 virtio_dev_link_update(dev, 0); 2354 2355 return 0; 2356 } 2357 2358 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2359 { 2360 struct virtio_hw *hw = dev->data->dev_private; 2361 uint16_t nr_vq = virtio_get_nr_vq(hw); 2362 const char *type __rte_unused; 2363 unsigned int i, mbuf_num = 0; 2364 struct virtqueue *vq; 2365 struct rte_mbuf *buf; 2366 int queue_type; 2367 2368 if (hw->vqs == NULL) 2369 return; 2370 2371 for (i = 0; i < nr_vq; i++) { 2372 vq = hw->vqs[i]; 2373 if (!vq) 2374 continue; 2375 2376 queue_type = virtio_get_queue_type(hw, i); 2377 if (queue_type == VTNET_RQ) 2378 type = "rxq"; 2379 else if (queue_type == VTNET_TQ) 2380 type = "txq"; 2381 else 2382 continue; 2383 2384 PMD_INIT_LOG(DEBUG, 2385 "Before freeing %s[%d] used and unused buf", 2386 type, i); 2387 VIRTQUEUE_DUMP(vq); 2388 2389 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2390 rte_pktmbuf_free(buf); 2391 mbuf_num++; 2392 } 2393 2394 PMD_INIT_LOG(DEBUG, 2395 "After freeing %s[%d] used and unused buf", 2396 type, i); 2397 VIRTQUEUE_DUMP(vq); 2398 } 2399 2400 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2401 } 2402 2403 static void 2404 virtio_tx_completed_cleanup(struct rte_eth_dev *dev) 2405 { 2406 struct virtio_hw *hw = dev->data->dev_private; 2407 struct virtqueue *vq; 2408 int qidx; 2409 void (*xmit_cleanup)(struct virtqueue *vq, uint16_t nb_used); 2410 2411 if (virtio_with_packed_queue(hw)) { 2412 if (hw->use_vec_tx) 2413 xmit_cleanup = &virtio_xmit_cleanup_inorder_packed; 2414 else if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) 2415 xmit_cleanup = &virtio_xmit_cleanup_inorder_packed; 2416 else 2417 xmit_cleanup = &virtio_xmit_cleanup_normal_packed; 2418 } else { 2419 if (hw->use_inorder_tx) 2420 xmit_cleanup = &virtio_xmit_cleanup_inorder; 2421 else 2422 xmit_cleanup = &virtio_xmit_cleanup; 2423 } 2424 2425 for (qidx = 0; qidx < hw->max_queue_pairs; qidx++) { 2426 vq = hw->vqs[2 * qidx + VTNET_SQ_TQ_QUEUE_IDX]; 2427 if (vq != NULL) 2428 xmit_cleanup(vq, virtqueue_nused(vq)); 2429 } 2430 } 2431 2432 /* 2433 * Stop device: disable interrupt and mark link down 2434 */ 2435 int 2436 virtio_dev_stop(struct rte_eth_dev *dev) 2437 { 2438 struct virtio_hw *hw = dev->data->dev_private; 2439 struct rte_eth_link link; 2440 struct rte_eth_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2441 2442 PMD_INIT_LOG(DEBUG, "stop"); 2443 dev->data->dev_started = 0; 2444 2445 rte_spinlock_lock(&hw->state_lock); 2446 if (!hw->started) 2447 goto out_unlock; 2448 hw->started = 0; 2449 2450 virtio_tx_completed_cleanup(dev); 2451 2452 if (intr_conf->lsc || intr_conf->rxq) { 2453 virtio_intr_disable(dev); 2454 2455 /* Reset interrupt callback */ 2456 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2457 rte_intr_callback_unregister(dev->intr_handle, 2458 virtio_interrupt_handler, 2459 dev); 2460 } 2461 } 2462 2463 memset(&link, 0, sizeof(link)); 2464 rte_eth_linkstatus_set(dev, &link); 2465 out_unlock: 2466 rte_spinlock_unlock(&hw->state_lock); 2467 2468 return 0; 2469 } 2470 2471 static int 2472 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2473 { 2474 struct rte_eth_link link; 2475 uint16_t status; 2476 struct virtio_hw *hw = dev->data->dev_private; 2477 2478 memset(&link, 0, sizeof(link)); 2479 link.link_duplex = hw->duplex; 2480 link.link_speed = hw->speed; 2481 link.link_autoneg = RTE_ETH_LINK_AUTONEG; 2482 2483 if (!hw->started) { 2484 link.link_status = RTE_ETH_LINK_DOWN; 2485 link.link_speed = RTE_ETH_SPEED_NUM_NONE; 2486 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2487 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2488 virtio_read_dev_config(hw, 2489 offsetof(struct virtio_net_config, status), 2490 &status, sizeof(status)); 2491 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2492 link.link_status = RTE_ETH_LINK_DOWN; 2493 link.link_speed = RTE_ETH_SPEED_NUM_NONE; 2494 PMD_INIT_LOG(DEBUG, "Port %d is down", 2495 dev->data->port_id); 2496 } else { 2497 link.link_status = RTE_ETH_LINK_UP; 2498 PMD_INIT_LOG(DEBUG, "Port %d is up", 2499 dev->data->port_id); 2500 } 2501 } else { 2502 link.link_status = RTE_ETH_LINK_UP; 2503 } 2504 2505 return rte_eth_linkstatus_set(dev, &link); 2506 } 2507 2508 static int 2509 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2510 { 2511 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2512 struct virtio_hw *hw = dev->data->dev_private; 2513 uint64_t offloads = rxmode->offloads; 2514 2515 if (mask & RTE_ETH_VLAN_FILTER_MASK) { 2516 if ((offloads & RTE_ETH_RX_OFFLOAD_VLAN_FILTER) && 2517 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2518 2519 PMD_DRV_LOG(NOTICE, 2520 "vlan filtering not available on this host"); 2521 2522 return -ENOTSUP; 2523 } 2524 } 2525 2526 if (mask & RTE_ETH_VLAN_STRIP_MASK) 2527 hw->vlan_strip = !!(offloads & RTE_ETH_RX_OFFLOAD_VLAN_STRIP); 2528 2529 return 0; 2530 } 2531 2532 static int 2533 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2534 { 2535 uint64_t tso_mask, host_features; 2536 struct virtio_hw *hw = dev->data->dev_private; 2537 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2538 2539 dev_info->max_rx_queues = 2540 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2541 dev_info->max_tx_queues = 2542 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2543 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2544 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2545 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2546 dev_info->max_mtu = hw->max_mtu; 2547 2548 host_features = VIRTIO_OPS(hw)->get_features(hw); 2549 dev_info->rx_offload_capa = RTE_ETH_RX_OFFLOAD_VLAN_STRIP; 2550 if (host_features & (1ULL << VIRTIO_NET_F_MRG_RXBUF)) 2551 dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_SCATTER; 2552 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2553 dev_info->rx_offload_capa |= 2554 RTE_ETH_RX_OFFLOAD_TCP_CKSUM | 2555 RTE_ETH_RX_OFFLOAD_UDP_CKSUM; 2556 } 2557 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2558 dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_VLAN_FILTER; 2559 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2560 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2561 if ((host_features & tso_mask) == tso_mask) 2562 dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_TCP_LRO; 2563 2564 dev_info->tx_offload_capa = RTE_ETH_TX_OFFLOAD_MULTI_SEGS | 2565 RTE_ETH_TX_OFFLOAD_VLAN_INSERT; 2566 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2567 dev_info->tx_offload_capa |= 2568 RTE_ETH_TX_OFFLOAD_UDP_CKSUM | 2569 RTE_ETH_TX_OFFLOAD_TCP_CKSUM; 2570 } 2571 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2572 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2573 if ((host_features & tso_mask) == tso_mask) 2574 dev_info->tx_offload_capa |= RTE_ETH_TX_OFFLOAD_TCP_TSO; 2575 2576 if (host_features & (1ULL << VIRTIO_F_RING_PACKED)) { 2577 /* 2578 * According to 2.7 Packed Virtqueues, 2579 * 2.7.10.1 Structure Size and Alignment: 2580 * The Queue Size value does not have to be a power of 2. 2581 */ 2582 dev_info->rx_desc_lim.nb_max = UINT16_MAX; 2583 dev_info->tx_desc_lim.nb_max = UINT16_MAX; 2584 } else { 2585 /* 2586 * According to 2.6 Split Virtqueues: 2587 * Queue Size value is always a power of 2. The maximum Queue 2588 * Size value is 32768. 2589 */ 2590 dev_info->rx_desc_lim.nb_max = 32768; 2591 dev_info->tx_desc_lim.nb_max = 32768; 2592 } 2593 /* 2594 * Actual minimum is not the same for virtqueues of different kinds, 2595 * but to avoid tangling the code with separate branches, rely on 2596 * default thresholds since desc number must be at least of their size. 2597 */ 2598 dev_info->rx_desc_lim.nb_min = RTE_MAX(DEFAULT_RX_FREE_THRESH, 2599 RTE_VIRTIO_VPMD_RX_REARM_THRESH); 2600 dev_info->tx_desc_lim.nb_min = DEFAULT_TX_FREE_THRESH; 2601 dev_info->rx_desc_lim.nb_align = 1; 2602 dev_info->tx_desc_lim.nb_align = 1; 2603 2604 return 0; 2605 } 2606 2607 /* 2608 * It enables testpmd to collect per queue stats. 2609 */ 2610 static int 2611 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2612 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2613 __rte_unused uint8_t is_rx) 2614 { 2615 return 0; 2616 } 2617 2618 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_init, init, NOTICE); 2619 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_driver, driver, NOTICE); 2620