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_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_free(dev->intr_handle->intr_vec); 735 dev->intr_handle->intr_vec = NULL; 736 } 737 738 virtio_reset(hw); 739 virtio_dev_free_mbufs(dev); 740 virtio_free_queues(hw); 741 742 return VIRTIO_OPS(hw)->dev_close(hw); 743 } 744 745 static int 746 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 747 { 748 struct virtio_hw *hw = dev->data->dev_private; 749 struct virtio_pmd_ctrl ctrl; 750 int dlen[1]; 751 int ret; 752 753 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 754 PMD_INIT_LOG(INFO, "host does not support rx control"); 755 return -ENOTSUP; 756 } 757 758 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 759 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 760 ctrl.data[0] = 1; 761 dlen[0] = 1; 762 763 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 764 if (ret) { 765 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 766 return -EAGAIN; 767 } 768 769 return 0; 770 } 771 772 static int 773 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 774 { 775 struct virtio_hw *hw = dev->data->dev_private; 776 struct virtio_pmd_ctrl ctrl; 777 int dlen[1]; 778 int ret; 779 780 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 781 PMD_INIT_LOG(INFO, "host does not support rx control"); 782 return -ENOTSUP; 783 } 784 785 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 786 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 787 ctrl.data[0] = 0; 788 dlen[0] = 1; 789 790 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 791 if (ret) { 792 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 793 return -EAGAIN; 794 } 795 796 return 0; 797 } 798 799 static int 800 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 801 { 802 struct virtio_hw *hw = dev->data->dev_private; 803 struct virtio_pmd_ctrl ctrl; 804 int dlen[1]; 805 int ret; 806 807 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 808 PMD_INIT_LOG(INFO, "host does not support rx control"); 809 return -ENOTSUP; 810 } 811 812 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 813 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 814 ctrl.data[0] = 1; 815 dlen[0] = 1; 816 817 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 818 if (ret) { 819 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 820 return -EAGAIN; 821 } 822 823 return 0; 824 } 825 826 static int 827 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 828 { 829 struct virtio_hw *hw = dev->data->dev_private; 830 struct virtio_pmd_ctrl ctrl; 831 int dlen[1]; 832 int ret; 833 834 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 835 PMD_INIT_LOG(INFO, "host does not support rx control"); 836 return -ENOTSUP; 837 } 838 839 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 840 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 841 ctrl.data[0] = 0; 842 dlen[0] = 1; 843 844 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 845 if (ret) { 846 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 847 return -EAGAIN; 848 } 849 850 return 0; 851 } 852 853 uint16_t 854 virtio_rx_mem_pool_buf_size(struct rte_mempool *mp) 855 { 856 return rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM; 857 } 858 859 bool 860 virtio_rx_check_scatter(uint16_t max_rx_pkt_len, uint16_t rx_buf_size, 861 bool rx_scatter_enabled, const char **error) 862 { 863 if (!rx_scatter_enabled && max_rx_pkt_len > rx_buf_size) { 864 *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small"; 865 return false; 866 } 867 868 return true; 869 } 870 871 static bool 872 virtio_check_scatter_on_all_rx_queues(struct rte_eth_dev *dev, 873 uint16_t frame_size) 874 { 875 struct virtio_hw *hw = dev->data->dev_private; 876 struct virtnet_rx *rxvq; 877 struct virtqueue *vq; 878 unsigned int qidx; 879 uint16_t buf_size; 880 const char *error; 881 882 if (hw->vqs == NULL) 883 return true; 884 885 for (qidx = 0; (vq = hw->vqs[2 * qidx + VTNET_SQ_RQ_QUEUE_IDX]) != NULL; 886 qidx++) { 887 rxvq = &vq->rxq; 888 if (rxvq->mpool == NULL) 889 continue; 890 buf_size = virtio_rx_mem_pool_buf_size(rxvq->mpool); 891 892 if (!virtio_rx_check_scatter(frame_size, buf_size, 893 hw->rx_ol_scatter, &error)) { 894 PMD_INIT_LOG(ERR, "MTU check for RxQ %u failed: %s", 895 qidx, error); 896 return false; 897 } 898 } 899 900 return true; 901 } 902 903 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 904 static int 905 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 906 { 907 struct virtio_hw *hw = dev->data->dev_private; 908 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 909 hw->vtnet_hdr_size; 910 uint32_t frame_size = mtu + ether_hdr_len; 911 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 912 913 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 914 915 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 916 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 917 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 918 return -EINVAL; 919 } 920 921 if (!virtio_check_scatter_on_all_rx_queues(dev, frame_size)) { 922 PMD_INIT_LOG(ERR, "MTU vs Rx scatter and Rx buffers check failed"); 923 return -EINVAL; 924 } 925 926 hw->max_rx_pkt_len = frame_size; 927 dev->data->dev_conf.rxmode.max_rx_pkt_len = hw->max_rx_pkt_len; 928 929 return 0; 930 } 931 932 static int 933 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 934 { 935 struct virtio_hw *hw = dev->data->dev_private; 936 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 937 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 938 939 virtqueue_enable_intr(vq); 940 virtio_mb(hw->weak_barriers); 941 return 0; 942 } 943 944 static int 945 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 946 { 947 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 948 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 949 950 virtqueue_disable_intr(vq); 951 return 0; 952 } 953 954 /* 955 * dev_ops for virtio, bare necessities for basic operation 956 */ 957 static const struct eth_dev_ops virtio_eth_dev_ops = { 958 .dev_configure = virtio_dev_configure, 959 .dev_start = virtio_dev_start, 960 .dev_stop = virtio_dev_stop, 961 .dev_close = virtio_dev_close, 962 .promiscuous_enable = virtio_dev_promiscuous_enable, 963 .promiscuous_disable = virtio_dev_promiscuous_disable, 964 .allmulticast_enable = virtio_dev_allmulticast_enable, 965 .allmulticast_disable = virtio_dev_allmulticast_disable, 966 .mtu_set = virtio_mtu_set, 967 .dev_infos_get = virtio_dev_info_get, 968 .stats_get = virtio_dev_stats_get, 969 .xstats_get = virtio_dev_xstats_get, 970 .xstats_get_names = virtio_dev_xstats_get_names, 971 .stats_reset = virtio_dev_stats_reset, 972 .xstats_reset = virtio_dev_stats_reset, 973 .link_update = virtio_dev_link_update, 974 .vlan_offload_set = virtio_dev_vlan_offload_set, 975 .rx_queue_setup = virtio_dev_rx_queue_setup, 976 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 977 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 978 .tx_queue_setup = virtio_dev_tx_queue_setup, 979 /* collect stats per queue */ 980 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 981 .vlan_filter_set = virtio_vlan_filter_set, 982 .mac_addr_add = virtio_mac_addr_add, 983 .mac_addr_remove = virtio_mac_addr_remove, 984 .mac_addr_set = virtio_mac_addr_set, 985 }; 986 987 /* 988 * dev_ops for virtio-user in secondary processes, as we just have 989 * some limited supports currently. 990 */ 991 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 992 .dev_infos_get = virtio_dev_info_get, 993 .stats_get = virtio_dev_stats_get, 994 .xstats_get = virtio_dev_xstats_get, 995 .xstats_get_names = virtio_dev_xstats_get_names, 996 .stats_reset = virtio_dev_stats_reset, 997 .xstats_reset = virtio_dev_stats_reset, 998 /* collect stats per queue */ 999 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 1000 }; 1001 1002 static void 1003 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1004 { 1005 unsigned i; 1006 1007 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1008 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1009 if (txvq == NULL) 1010 continue; 1011 1012 stats->opackets += txvq->stats.packets; 1013 stats->obytes += txvq->stats.bytes; 1014 1015 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 1016 stats->q_opackets[i] = txvq->stats.packets; 1017 stats->q_obytes[i] = txvq->stats.bytes; 1018 } 1019 } 1020 1021 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1022 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1023 if (rxvq == NULL) 1024 continue; 1025 1026 stats->ipackets += rxvq->stats.packets; 1027 stats->ibytes += rxvq->stats.bytes; 1028 stats->ierrors += rxvq->stats.errors; 1029 1030 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 1031 stats->q_ipackets[i] = rxvq->stats.packets; 1032 stats->q_ibytes[i] = rxvq->stats.bytes; 1033 } 1034 } 1035 1036 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 1037 } 1038 1039 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 1040 struct rte_eth_xstat_name *xstats_names, 1041 __rte_unused unsigned limit) 1042 { 1043 unsigned i; 1044 unsigned count = 0; 1045 unsigned t; 1046 1047 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1048 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1049 1050 if (xstats_names != NULL) { 1051 /* Note: limit checked in rte_eth_xstats_names() */ 1052 1053 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1054 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1055 if (rxvq == NULL) 1056 continue; 1057 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1058 snprintf(xstats_names[count].name, 1059 sizeof(xstats_names[count].name), 1060 "rx_q%u_%s", i, 1061 rte_virtio_rxq_stat_strings[t].name); 1062 count++; 1063 } 1064 } 1065 1066 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1067 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1068 if (txvq == NULL) 1069 continue; 1070 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1071 snprintf(xstats_names[count].name, 1072 sizeof(xstats_names[count].name), 1073 "tx_q%u_%s", i, 1074 rte_virtio_txq_stat_strings[t].name); 1075 count++; 1076 } 1077 } 1078 return count; 1079 } 1080 return nstats; 1081 } 1082 1083 static int 1084 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1085 unsigned n) 1086 { 1087 unsigned i; 1088 unsigned count = 0; 1089 1090 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1091 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1092 1093 if (n < nstats) 1094 return nstats; 1095 1096 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1097 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1098 1099 if (rxvq == NULL) 1100 continue; 1101 1102 unsigned t; 1103 1104 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1105 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1106 rte_virtio_rxq_stat_strings[t].offset); 1107 xstats[count].id = count; 1108 count++; 1109 } 1110 } 1111 1112 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1113 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1114 1115 if (txvq == NULL) 1116 continue; 1117 1118 unsigned t; 1119 1120 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1121 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1122 rte_virtio_txq_stat_strings[t].offset); 1123 xstats[count].id = count; 1124 count++; 1125 } 1126 } 1127 1128 return count; 1129 } 1130 1131 static int 1132 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1133 { 1134 virtio_update_stats(dev, stats); 1135 1136 return 0; 1137 } 1138 1139 static int 1140 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1141 { 1142 unsigned int i; 1143 1144 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1145 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1146 if (txvq == NULL) 1147 continue; 1148 1149 txvq->stats.packets = 0; 1150 txvq->stats.bytes = 0; 1151 txvq->stats.multicast = 0; 1152 txvq->stats.broadcast = 0; 1153 memset(txvq->stats.size_bins, 0, 1154 sizeof(txvq->stats.size_bins[0]) * 8); 1155 } 1156 1157 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1158 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1159 if (rxvq == NULL) 1160 continue; 1161 1162 rxvq->stats.packets = 0; 1163 rxvq->stats.bytes = 0; 1164 rxvq->stats.errors = 0; 1165 rxvq->stats.multicast = 0; 1166 rxvq->stats.broadcast = 0; 1167 memset(rxvq->stats.size_bins, 0, 1168 sizeof(rxvq->stats.size_bins[0]) * 8); 1169 } 1170 1171 return 0; 1172 } 1173 1174 static void 1175 virtio_set_hwaddr(struct virtio_hw *hw) 1176 { 1177 virtio_write_dev_config(hw, 1178 offsetof(struct virtio_net_config, mac), 1179 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1180 } 1181 1182 static void 1183 virtio_get_hwaddr(struct virtio_hw *hw) 1184 { 1185 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) { 1186 virtio_read_dev_config(hw, 1187 offsetof(struct virtio_net_config, mac), 1188 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1189 } else { 1190 rte_eth_random_addr(&hw->mac_addr[0]); 1191 virtio_set_hwaddr(hw); 1192 } 1193 } 1194 1195 static int 1196 virtio_mac_table_set(struct virtio_hw *hw, 1197 const struct virtio_net_ctrl_mac *uc, 1198 const struct virtio_net_ctrl_mac *mc) 1199 { 1200 struct virtio_pmd_ctrl ctrl; 1201 int err, len[2]; 1202 1203 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1204 PMD_DRV_LOG(INFO, "host does not support mac table"); 1205 return -1; 1206 } 1207 1208 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1209 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1210 1211 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1212 memcpy(ctrl.data, uc, len[0]); 1213 1214 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 1215 memcpy(ctrl.data + len[0], mc, len[1]); 1216 1217 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1218 if (err != 0) 1219 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1220 return err; 1221 } 1222 1223 static int 1224 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 1225 uint32_t index, uint32_t vmdq __rte_unused) 1226 { 1227 struct virtio_hw *hw = dev->data->dev_private; 1228 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 1229 unsigned int i; 1230 struct virtio_net_ctrl_mac *uc, *mc; 1231 1232 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1233 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1234 return -EINVAL; 1235 } 1236 1237 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1238 sizeof(uc->entries)); 1239 uc->entries = 0; 1240 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1241 sizeof(mc->entries)); 1242 mc->entries = 0; 1243 1244 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1245 const struct rte_ether_addr *addr 1246 = (i == index) ? mac_addr : addrs + i; 1247 struct virtio_net_ctrl_mac *tbl 1248 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1249 1250 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1251 } 1252 1253 return virtio_mac_table_set(hw, uc, mc); 1254 } 1255 1256 static void 1257 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1258 { 1259 struct virtio_hw *hw = dev->data->dev_private; 1260 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1261 struct virtio_net_ctrl_mac *uc, *mc; 1262 unsigned int i; 1263 1264 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1265 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1266 return; 1267 } 1268 1269 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1270 sizeof(uc->entries)); 1271 uc->entries = 0; 1272 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1273 sizeof(mc->entries)); 1274 mc->entries = 0; 1275 1276 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1277 struct virtio_net_ctrl_mac *tbl; 1278 1279 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1280 continue; 1281 1282 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1283 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1284 RTE_ETHER_ADDR_LEN); 1285 } 1286 1287 virtio_mac_table_set(hw, uc, mc); 1288 } 1289 1290 static int 1291 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1292 { 1293 struct virtio_hw *hw = dev->data->dev_private; 1294 1295 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1296 1297 /* Use atomic update if available */ 1298 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1299 struct virtio_pmd_ctrl ctrl; 1300 int len = RTE_ETHER_ADDR_LEN; 1301 1302 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1303 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1304 1305 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1306 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1307 } 1308 1309 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC)) 1310 return -ENOTSUP; 1311 1312 virtio_set_hwaddr(hw); 1313 return 0; 1314 } 1315 1316 static int 1317 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1318 { 1319 struct virtio_hw *hw = dev->data->dev_private; 1320 struct virtio_pmd_ctrl ctrl; 1321 int len; 1322 1323 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1324 return -ENOTSUP; 1325 1326 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1327 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1328 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1329 len = sizeof(vlan_id); 1330 1331 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1332 } 1333 1334 static int 1335 virtio_intr_unmask(struct rte_eth_dev *dev) 1336 { 1337 struct virtio_hw *hw = dev->data->dev_private; 1338 1339 if (rte_intr_ack(dev->intr_handle) < 0) 1340 return -1; 1341 1342 if (VIRTIO_OPS(hw)->intr_detect) 1343 VIRTIO_OPS(hw)->intr_detect(hw); 1344 1345 return 0; 1346 } 1347 1348 static int 1349 virtio_intr_enable(struct rte_eth_dev *dev) 1350 { 1351 struct virtio_hw *hw = dev->data->dev_private; 1352 1353 if (rte_intr_enable(dev->intr_handle) < 0) 1354 return -1; 1355 1356 if (VIRTIO_OPS(hw)->intr_detect) 1357 VIRTIO_OPS(hw)->intr_detect(hw); 1358 1359 return 0; 1360 } 1361 1362 static int 1363 virtio_intr_disable(struct rte_eth_dev *dev) 1364 { 1365 struct virtio_hw *hw = dev->data->dev_private; 1366 1367 if (rte_intr_disable(dev->intr_handle) < 0) 1368 return -1; 1369 1370 if (VIRTIO_OPS(hw)->intr_detect) 1371 VIRTIO_OPS(hw)->intr_detect(hw); 1372 1373 return 0; 1374 } 1375 1376 static int 1377 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1378 { 1379 uint64_t host_features; 1380 1381 /* Prepare guest_features: feature that driver wants to support */ 1382 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1383 req_features); 1384 1385 /* Read device(host) feature bits */ 1386 host_features = VIRTIO_OPS(hw)->get_features(hw); 1387 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1388 host_features); 1389 1390 /* If supported, ensure MTU value is valid before acknowledging it. */ 1391 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1392 struct virtio_net_config config; 1393 1394 virtio_read_dev_config(hw, 1395 offsetof(struct virtio_net_config, mtu), 1396 &config.mtu, sizeof(config.mtu)); 1397 1398 if (config.mtu < RTE_ETHER_MIN_MTU) 1399 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1400 } 1401 1402 /* 1403 * Negotiate features: Subset of device feature bits are written back 1404 * guest feature bits. 1405 */ 1406 hw->guest_features = req_features; 1407 hw->guest_features = virtio_negotiate_features(hw, host_features); 1408 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1409 hw->guest_features); 1410 1411 if (VIRTIO_OPS(hw)->features_ok(hw) < 0) 1412 return -1; 1413 1414 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) { 1415 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1416 1417 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1418 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!"); 1419 return -1; 1420 } 1421 } 1422 1423 hw->req_guest_features = req_features; 1424 1425 return 0; 1426 } 1427 1428 int 1429 virtio_dev_pause(struct rte_eth_dev *dev) 1430 { 1431 struct virtio_hw *hw = dev->data->dev_private; 1432 1433 rte_spinlock_lock(&hw->state_lock); 1434 1435 if (hw->started == 0) { 1436 /* Device is just stopped. */ 1437 rte_spinlock_unlock(&hw->state_lock); 1438 return -1; 1439 } 1440 hw->started = 0; 1441 /* 1442 * Prevent the worker threads from touching queues to avoid contention, 1443 * 1 ms should be enough for the ongoing Tx function to finish. 1444 */ 1445 rte_delay_ms(1); 1446 return 0; 1447 } 1448 1449 /* 1450 * Recover hw state to let the worker threads continue. 1451 */ 1452 void 1453 virtio_dev_resume(struct rte_eth_dev *dev) 1454 { 1455 struct virtio_hw *hw = dev->data->dev_private; 1456 1457 hw->started = 1; 1458 rte_spinlock_unlock(&hw->state_lock); 1459 } 1460 1461 /* 1462 * Should be called only after device is paused. 1463 */ 1464 int 1465 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1466 int nb_pkts) 1467 { 1468 struct virtio_hw *hw = dev->data->dev_private; 1469 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1470 int ret; 1471 1472 hw->inject_pkts = tx_pkts; 1473 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1474 hw->inject_pkts = NULL; 1475 1476 return ret; 1477 } 1478 1479 static void 1480 virtio_notify_peers(struct rte_eth_dev *dev) 1481 { 1482 struct virtio_hw *hw = dev->data->dev_private; 1483 struct virtnet_rx *rxvq; 1484 struct rte_mbuf *rarp_mbuf; 1485 1486 if (!dev->data->rx_queues) 1487 return; 1488 1489 rxvq = dev->data->rx_queues[0]; 1490 if (!rxvq) 1491 return; 1492 1493 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1494 (struct rte_ether_addr *)hw->mac_addr); 1495 if (rarp_mbuf == NULL) { 1496 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1497 return; 1498 } 1499 1500 /* If virtio port just stopped, no need to send RARP */ 1501 if (virtio_dev_pause(dev) < 0) { 1502 rte_pktmbuf_free(rarp_mbuf); 1503 return; 1504 } 1505 1506 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1507 virtio_dev_resume(dev); 1508 } 1509 1510 static void 1511 virtio_ack_link_announce(struct rte_eth_dev *dev) 1512 { 1513 struct virtio_hw *hw = dev->data->dev_private; 1514 struct virtio_pmd_ctrl ctrl; 1515 1516 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1517 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1518 1519 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1520 } 1521 1522 /* 1523 * Process virtio config changed interrupt. Call the callback 1524 * if link state changed, generate gratuitous RARP packet if 1525 * the status indicates an ANNOUNCE. 1526 */ 1527 void 1528 virtio_interrupt_handler(void *param) 1529 { 1530 struct rte_eth_dev *dev = param; 1531 struct virtio_hw *hw = dev->data->dev_private; 1532 uint8_t isr; 1533 uint16_t status; 1534 1535 /* Read interrupt status which clears interrupt */ 1536 isr = virtio_get_isr(hw); 1537 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1538 1539 if (virtio_intr_unmask(dev) < 0) 1540 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1541 1542 if (isr & VIRTIO_ISR_CONFIG) { 1543 if (virtio_dev_link_update(dev, 0) == 0) 1544 rte_eth_dev_callback_process(dev, 1545 RTE_ETH_EVENT_INTR_LSC, 1546 NULL); 1547 1548 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1549 virtio_read_dev_config(hw, 1550 offsetof(struct virtio_net_config, status), 1551 &status, sizeof(status)); 1552 if (status & VIRTIO_NET_S_ANNOUNCE) { 1553 virtio_notify_peers(dev); 1554 if (hw->cvq) 1555 virtio_ack_link_announce(dev); 1556 } 1557 } 1558 } 1559 } 1560 1561 /* set rx and tx handlers according to what is supported */ 1562 static void 1563 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1564 { 1565 struct virtio_hw *hw = eth_dev->data->dev_private; 1566 1567 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1568 if (virtio_with_packed_queue(hw)) { 1569 PMD_INIT_LOG(INFO, 1570 "virtio: using packed ring %s Tx path on port %u", 1571 hw->use_vec_tx ? "vectorized" : "standard", 1572 eth_dev->data->port_id); 1573 if (hw->use_vec_tx) 1574 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1575 else 1576 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1577 } else { 1578 if (hw->use_inorder_tx) { 1579 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1580 eth_dev->data->port_id); 1581 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1582 } else { 1583 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1584 eth_dev->data->port_id); 1585 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1586 } 1587 } 1588 1589 if (virtio_with_packed_queue(hw)) { 1590 if (hw->use_vec_rx) { 1591 PMD_INIT_LOG(INFO, 1592 "virtio: using packed ring vectorized Rx path on port %u", 1593 eth_dev->data->port_id); 1594 eth_dev->rx_pkt_burst = 1595 &virtio_recv_pkts_packed_vec; 1596 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1597 PMD_INIT_LOG(INFO, 1598 "virtio: using packed ring mergeable buffer Rx path on port %u", 1599 eth_dev->data->port_id); 1600 eth_dev->rx_pkt_burst = 1601 &virtio_recv_mergeable_pkts_packed; 1602 } else { 1603 PMD_INIT_LOG(INFO, 1604 "virtio: using packed ring standard Rx path on port %u", 1605 eth_dev->data->port_id); 1606 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1607 } 1608 } else { 1609 if (hw->use_vec_rx) { 1610 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1611 eth_dev->data->port_id); 1612 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1613 } else if (hw->use_inorder_rx) { 1614 PMD_INIT_LOG(INFO, 1615 "virtio: using inorder Rx path on port %u", 1616 eth_dev->data->port_id); 1617 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1618 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1619 PMD_INIT_LOG(INFO, 1620 "virtio: using mergeable buffer Rx path on port %u", 1621 eth_dev->data->port_id); 1622 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1623 } else { 1624 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1625 eth_dev->data->port_id); 1626 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1627 } 1628 } 1629 1630 } 1631 1632 /* Only support 1:1 queue/interrupt mapping so far. 1633 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1634 * interrupt vectors (<N+1). 1635 */ 1636 static int 1637 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1638 { 1639 uint32_t i; 1640 struct virtio_hw *hw = dev->data->dev_private; 1641 1642 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1643 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1644 dev->intr_handle->intr_vec[i] = i + 1; 1645 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1646 VIRTIO_MSI_NO_VECTOR) { 1647 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1648 return -EBUSY; 1649 } 1650 } 1651 1652 return 0; 1653 } 1654 1655 static void 1656 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1657 { 1658 uint32_t i; 1659 struct virtio_hw *hw = dev->data->dev_private; 1660 1661 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1662 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1663 VIRTIO_OPS(hw)->set_queue_irq(hw, 1664 hw->vqs[i * VTNET_CQ], 1665 VIRTIO_MSI_NO_VECTOR); 1666 } 1667 1668 static int 1669 virtio_configure_intr(struct rte_eth_dev *dev) 1670 { 1671 struct virtio_hw *hw = dev->data->dev_private; 1672 1673 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1674 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1675 return -ENOTSUP; 1676 } 1677 1678 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1679 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1680 return -1; 1681 } 1682 1683 if (!dev->intr_handle->intr_vec) { 1684 dev->intr_handle->intr_vec = 1685 rte_zmalloc("intr_vec", 1686 hw->max_queue_pairs * sizeof(int), 0); 1687 if (!dev->intr_handle->intr_vec) { 1688 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1689 hw->max_queue_pairs); 1690 return -ENOMEM; 1691 } 1692 } 1693 1694 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 1695 /* Re-register callback to update max_intr */ 1696 rte_intr_callback_unregister(dev->intr_handle, 1697 virtio_interrupt_handler, 1698 dev); 1699 rte_intr_callback_register(dev->intr_handle, 1700 virtio_interrupt_handler, 1701 dev); 1702 } 1703 1704 /* DO NOT try to remove this! This function will enable msix, or QEMU 1705 * will encounter SIGSEGV when DRIVER_OK is sent. 1706 * And for legacy devices, this should be done before queue/vec binding 1707 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1708 * (22) will be ignored. 1709 */ 1710 if (virtio_intr_enable(dev) < 0) { 1711 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1712 return -1; 1713 } 1714 1715 if (virtio_queues_bind_intr(dev) < 0) { 1716 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1717 return -1; 1718 } 1719 1720 return 0; 1721 } 1722 #define DUPLEX_UNKNOWN 0xff 1723 /* reset device and renegotiate features if needed */ 1724 static int 1725 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1726 { 1727 struct virtio_hw *hw = eth_dev->data->dev_private; 1728 struct virtio_net_config *config; 1729 struct virtio_net_config local_config; 1730 int ret; 1731 1732 /* Reset the device although not necessary at startup */ 1733 virtio_reset(hw); 1734 1735 if (hw->vqs) { 1736 virtio_dev_free_mbufs(eth_dev); 1737 virtio_free_queues(hw); 1738 } 1739 1740 /* Tell the host we've noticed this device. */ 1741 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1742 1743 /* Tell the host we've known how to drive the device. */ 1744 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1745 if (virtio_ethdev_negotiate_features(hw, req_features) < 0) 1746 return -1; 1747 1748 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1749 1750 /* If host does not support both status and MSI-X then disable LSC */ 1751 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc) 1752 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1753 else 1754 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1755 1756 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1757 1758 /* Setting up rx_header size for the device */ 1759 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1760 virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 1761 virtio_with_packed_queue(hw)) 1762 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1763 else 1764 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1765 1766 /* Copy the permanent MAC address to: virtio_hw */ 1767 virtio_get_hwaddr(hw); 1768 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1769 ð_dev->data->mac_addrs[0]); 1770 PMD_INIT_LOG(DEBUG, 1771 "PORT MAC: " RTE_ETHER_ADDR_PRT_FMT, 1772 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1773 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1774 1775 if (hw->speed == ETH_SPEED_NUM_UNKNOWN) { 1776 if (virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) { 1777 config = &local_config; 1778 virtio_read_dev_config(hw, 1779 offsetof(struct virtio_net_config, speed), 1780 &config->speed, sizeof(config->speed)); 1781 virtio_read_dev_config(hw, 1782 offsetof(struct virtio_net_config, duplex), 1783 &config->duplex, sizeof(config->duplex)); 1784 hw->speed = config->speed; 1785 hw->duplex = config->duplex; 1786 } 1787 } 1788 if (hw->duplex == DUPLEX_UNKNOWN) 1789 hw->duplex = ETH_LINK_FULL_DUPLEX; 1790 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1791 hw->speed, hw->duplex); 1792 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1793 config = &local_config; 1794 1795 virtio_read_dev_config(hw, 1796 offsetof(struct virtio_net_config, mac), 1797 &config->mac, sizeof(config->mac)); 1798 1799 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1800 virtio_read_dev_config(hw, 1801 offsetof(struct virtio_net_config, status), 1802 &config->status, sizeof(config->status)); 1803 } else { 1804 PMD_INIT_LOG(DEBUG, 1805 "VIRTIO_NET_F_STATUS is not supported"); 1806 config->status = 0; 1807 } 1808 1809 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ)) { 1810 virtio_read_dev_config(hw, 1811 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1812 &config->max_virtqueue_pairs, 1813 sizeof(config->max_virtqueue_pairs)); 1814 } else { 1815 PMD_INIT_LOG(DEBUG, 1816 "VIRTIO_NET_F_MQ is not supported"); 1817 config->max_virtqueue_pairs = 1; 1818 } 1819 1820 hw->max_queue_pairs = config->max_virtqueue_pairs; 1821 1822 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) { 1823 virtio_read_dev_config(hw, 1824 offsetof(struct virtio_net_config, mtu), 1825 &config->mtu, 1826 sizeof(config->mtu)); 1827 1828 /* 1829 * MTU value has already been checked at negotiation 1830 * time, but check again in case it has changed since 1831 * then, which should not happen. 1832 */ 1833 if (config->mtu < RTE_ETHER_MIN_MTU) { 1834 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1835 config->mtu); 1836 return -1; 1837 } 1838 1839 hw->max_mtu = config->mtu; 1840 /* Set initial MTU to maximum one supported by vhost */ 1841 eth_dev->data->mtu = config->mtu; 1842 1843 } else { 1844 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1845 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1846 } 1847 1848 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1849 config->max_virtqueue_pairs); 1850 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1851 PMD_INIT_LOG(DEBUG, 1852 "PORT MAC: " RTE_ETHER_ADDR_PRT_FMT, 1853 config->mac[0], config->mac[1], 1854 config->mac[2], config->mac[3], 1855 config->mac[4], config->mac[5]); 1856 } else { 1857 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1858 hw->max_queue_pairs = 1; 1859 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1860 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1861 } 1862 1863 ret = virtio_alloc_queues(eth_dev); 1864 if (ret < 0) 1865 return ret; 1866 1867 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1868 if (virtio_configure_intr(eth_dev) < 0) { 1869 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1870 virtio_free_queues(hw); 1871 return -1; 1872 } 1873 } 1874 1875 virtio_reinit_complete(hw); 1876 1877 return 0; 1878 } 1879 1880 /* 1881 * This function is based on probe() function in virtio_pci.c 1882 * It returns 0 on success. 1883 */ 1884 int 1885 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1886 { 1887 struct virtio_hw *hw = eth_dev->data->dev_private; 1888 uint32_t speed = ETH_SPEED_NUM_UNKNOWN; 1889 int vectorized = 0; 1890 int ret; 1891 1892 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1893 PMD_INIT_LOG(ERR, 1894 "Not sufficient headroom required = %d, avail = %d", 1895 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1896 RTE_PKTMBUF_HEADROOM); 1897 1898 return -1; 1899 } 1900 1901 eth_dev->dev_ops = &virtio_eth_dev_ops; 1902 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done; 1903 1904 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1905 set_rxtx_funcs(eth_dev); 1906 return 0; 1907 } 1908 1909 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized); 1910 if (ret < 0) 1911 return ret; 1912 hw->speed = speed; 1913 hw->duplex = DUPLEX_UNKNOWN; 1914 1915 /* Allocate memory for storing MAC addresses */ 1916 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1917 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1918 if (eth_dev->data->mac_addrs == NULL) { 1919 PMD_INIT_LOG(ERR, 1920 "Failed to allocate %d bytes needed to store MAC addresses", 1921 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1922 return -ENOMEM; 1923 } 1924 1925 rte_spinlock_init(&hw->state_lock); 1926 1927 /* reset device and negotiate default features */ 1928 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1929 if (ret < 0) 1930 goto err_virtio_init; 1931 1932 if (vectorized) { 1933 if (!virtio_with_packed_queue(hw)) { 1934 hw->use_vec_rx = 1; 1935 } else { 1936 #if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM) 1937 hw->use_vec_rx = 1; 1938 hw->use_vec_tx = 1; 1939 #else 1940 PMD_DRV_LOG(INFO, 1941 "building environment do not support packed ring vectorized"); 1942 #endif 1943 } 1944 } 1945 1946 hw->opened = 1; 1947 1948 return 0; 1949 1950 err_virtio_init: 1951 rte_free(eth_dev->data->mac_addrs); 1952 eth_dev->data->mac_addrs = NULL; 1953 return ret; 1954 } 1955 1956 static uint32_t 1957 virtio_dev_speed_capa_get(uint32_t speed) 1958 { 1959 switch (speed) { 1960 case ETH_SPEED_NUM_10G: 1961 return ETH_LINK_SPEED_10G; 1962 case ETH_SPEED_NUM_20G: 1963 return ETH_LINK_SPEED_20G; 1964 case ETH_SPEED_NUM_25G: 1965 return ETH_LINK_SPEED_25G; 1966 case ETH_SPEED_NUM_40G: 1967 return ETH_LINK_SPEED_40G; 1968 case ETH_SPEED_NUM_50G: 1969 return ETH_LINK_SPEED_50G; 1970 case ETH_SPEED_NUM_56G: 1971 return ETH_LINK_SPEED_56G; 1972 case ETH_SPEED_NUM_100G: 1973 return ETH_LINK_SPEED_100G; 1974 case ETH_SPEED_NUM_200G: 1975 return ETH_LINK_SPEED_200G; 1976 default: 1977 return 0; 1978 } 1979 } 1980 1981 static int vectorized_check_handler(__rte_unused const char *key, 1982 const char *value, void *ret_val) 1983 { 1984 if (strcmp(value, "1") == 0) 1985 *(int *)ret_val = 1; 1986 else 1987 *(int *)ret_val = 0; 1988 1989 return 0; 1990 } 1991 1992 #define VIRTIO_ARG_SPEED "speed" 1993 #define VIRTIO_ARG_VECTORIZED "vectorized" 1994 1995 static int 1996 link_speed_handler(const char *key __rte_unused, 1997 const char *value, void *ret_val) 1998 { 1999 uint32_t val; 2000 if (!value || !ret_val) 2001 return -EINVAL; 2002 val = strtoul(value, NULL, 0); 2003 /* validate input */ 2004 if (virtio_dev_speed_capa_get(val) == 0) 2005 return -EINVAL; 2006 *(uint32_t *)ret_val = val; 2007 2008 return 0; 2009 } 2010 2011 2012 static int 2013 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized) 2014 { 2015 struct rte_kvargs *kvlist; 2016 int ret = 0; 2017 2018 if (devargs == NULL) 2019 return 0; 2020 2021 kvlist = rte_kvargs_parse(devargs->args, NULL); 2022 if (kvlist == NULL) { 2023 PMD_INIT_LOG(ERR, "error when parsing param"); 2024 return 0; 2025 } 2026 2027 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2028 ret = rte_kvargs_process(kvlist, 2029 VIRTIO_ARG_SPEED, 2030 link_speed_handler, speed); 2031 if (ret < 0) { 2032 PMD_INIT_LOG(ERR, "Failed to parse %s", 2033 VIRTIO_ARG_SPEED); 2034 goto exit; 2035 } 2036 } 2037 2038 if (vectorized && 2039 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2040 ret = rte_kvargs_process(kvlist, 2041 VIRTIO_ARG_VECTORIZED, 2042 vectorized_check_handler, vectorized); 2043 if (ret < 0) { 2044 PMD_INIT_LOG(ERR, "Failed to parse %s", 2045 VIRTIO_ARG_VECTORIZED); 2046 goto exit; 2047 } 2048 } 2049 2050 exit: 2051 rte_kvargs_free(kvlist); 2052 return ret; 2053 } 2054 2055 static uint8_t 2056 rx_offload_enabled(struct virtio_hw *hw) 2057 { 2058 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2059 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2060 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2061 } 2062 2063 static uint8_t 2064 tx_offload_enabled(struct virtio_hw *hw) 2065 { 2066 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) || 2067 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2068 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2069 } 2070 2071 /* 2072 * Configure virtio device 2073 * It returns 0 on success. 2074 */ 2075 static int 2076 virtio_dev_configure(struct rte_eth_dev *dev) 2077 { 2078 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2079 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2080 struct virtio_hw *hw = dev->data->dev_private; 2081 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2082 hw->vtnet_hdr_size; 2083 uint64_t rx_offloads = rxmode->offloads; 2084 uint64_t tx_offloads = txmode->offloads; 2085 uint64_t req_features; 2086 int ret; 2087 2088 PMD_INIT_LOG(DEBUG, "configure"); 2089 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2090 2091 if (rxmode->mq_mode != ETH_MQ_RX_NONE) { 2092 PMD_DRV_LOG(ERR, 2093 "Unsupported Rx multi queue mode %d", 2094 rxmode->mq_mode); 2095 return -EINVAL; 2096 } 2097 2098 if (txmode->mq_mode != ETH_MQ_TX_NONE) { 2099 PMD_DRV_LOG(ERR, 2100 "Unsupported Tx multi queue mode %d", 2101 txmode->mq_mode); 2102 return -EINVAL; 2103 } 2104 2105 if (dev->data->dev_conf.intr_conf.rxq) { 2106 ret = virtio_init_device(dev, hw->req_guest_features); 2107 if (ret < 0) 2108 return ret; 2109 } 2110 2111 if ((rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) && 2112 (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)) 2113 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2114 2115 if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) 2116 hw->max_rx_pkt_len = rxmode->max_rx_pkt_len; 2117 else 2118 hw->max_rx_pkt_len = ether_hdr_len + dev->data->mtu; 2119 2120 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2121 DEV_RX_OFFLOAD_TCP_CKSUM)) 2122 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2123 2124 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2125 req_features |= 2126 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2127 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2128 2129 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2130 DEV_TX_OFFLOAD_TCP_CKSUM)) 2131 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2132 2133 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2134 req_features |= 2135 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2136 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2137 2138 /* if request features changed, reinit the device */ 2139 if (req_features != hw->req_guest_features) { 2140 ret = virtio_init_device(dev, req_features); 2141 if (ret < 0) 2142 return ret; 2143 } 2144 2145 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2146 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2147 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2148 PMD_DRV_LOG(ERR, 2149 "rx checksum not available on this host"); 2150 return -ENOTSUP; 2151 } 2152 2153 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2154 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2155 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2156 PMD_DRV_LOG(ERR, 2157 "Large Receive Offload not available on this host"); 2158 return -ENOTSUP; 2159 } 2160 2161 /* start control queue */ 2162 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2163 virtio_dev_cq_start(dev); 2164 2165 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2166 hw->vlan_strip = 1; 2167 2168 hw->rx_ol_scatter = (rx_offloads & DEV_RX_OFFLOAD_SCATTER); 2169 2170 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2171 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2172 PMD_DRV_LOG(ERR, 2173 "vlan filtering not available on this host"); 2174 return -ENOTSUP; 2175 } 2176 2177 hw->has_tx_offload = tx_offload_enabled(hw); 2178 hw->has_rx_offload = rx_offload_enabled(hw); 2179 2180 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2181 /* Enable vector (0) for Link State Intrerrupt */ 2182 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) == 2183 VIRTIO_MSI_NO_VECTOR) { 2184 PMD_DRV_LOG(ERR, "failed to set config vector"); 2185 return -EBUSY; 2186 } 2187 2188 if (virtio_with_packed_queue(hw)) { 2189 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2190 if ((hw->use_vec_rx || hw->use_vec_tx) && 2191 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2192 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2193 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2194 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) { 2195 PMD_DRV_LOG(INFO, 2196 "disabled packed ring vectorized path for requirements not met"); 2197 hw->use_vec_rx = 0; 2198 hw->use_vec_tx = 0; 2199 } 2200 #elif defined(RTE_ARCH_ARM) 2201 if ((hw->use_vec_rx || hw->use_vec_tx) && 2202 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) || 2203 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2204 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2205 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) { 2206 PMD_DRV_LOG(INFO, 2207 "disabled packed ring vectorized path for requirements not met"); 2208 hw->use_vec_rx = 0; 2209 hw->use_vec_tx = 0; 2210 } 2211 #else 2212 hw->use_vec_rx = 0; 2213 hw->use_vec_tx = 0; 2214 #endif 2215 2216 if (hw->use_vec_rx) { 2217 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2218 PMD_DRV_LOG(INFO, 2219 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2220 hw->use_vec_rx = 0; 2221 } 2222 2223 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) { 2224 PMD_DRV_LOG(INFO, 2225 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2226 hw->use_vec_rx = 0; 2227 } 2228 } 2229 } else { 2230 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2231 hw->use_inorder_tx = 1; 2232 hw->use_inorder_rx = 1; 2233 hw->use_vec_rx = 0; 2234 } 2235 2236 if (hw->use_vec_rx) { 2237 #if defined RTE_ARCH_ARM 2238 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2239 PMD_DRV_LOG(INFO, 2240 "disabled split ring vectorized path for requirement not met"); 2241 hw->use_vec_rx = 0; 2242 } 2243 #endif 2244 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2245 PMD_DRV_LOG(INFO, 2246 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2247 hw->use_vec_rx = 0; 2248 } 2249 2250 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2251 DEV_RX_OFFLOAD_TCP_CKSUM | 2252 DEV_RX_OFFLOAD_TCP_LRO | 2253 DEV_RX_OFFLOAD_VLAN_STRIP)) { 2254 PMD_DRV_LOG(INFO, 2255 "disabled split ring vectorized rx for offloading enabled"); 2256 hw->use_vec_rx = 0; 2257 } 2258 2259 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) { 2260 PMD_DRV_LOG(INFO, 2261 "disabled split ring vectorized rx, max SIMD bitwidth too low"); 2262 hw->use_vec_rx = 0; 2263 } 2264 } 2265 } 2266 2267 return 0; 2268 } 2269 2270 2271 static int 2272 virtio_dev_start(struct rte_eth_dev *dev) 2273 { 2274 uint16_t nb_queues, i; 2275 struct virtqueue *vq; 2276 struct virtio_hw *hw = dev->data->dev_private; 2277 int ret; 2278 2279 /* Finish the initialization of the queues */ 2280 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2281 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2282 if (ret < 0) 2283 return ret; 2284 } 2285 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2286 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2287 if (ret < 0) 2288 return ret; 2289 } 2290 2291 /* check if lsc interrupt feature is enabled */ 2292 if (dev->data->dev_conf.intr_conf.lsc) { 2293 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2294 PMD_DRV_LOG(ERR, "link status not supported by host"); 2295 return -ENOTSUP; 2296 } 2297 } 2298 2299 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2300 * in device configure, but it could be unmapped when device is 2301 * stopped. 2302 */ 2303 if (dev->data->dev_conf.intr_conf.lsc || 2304 dev->data->dev_conf.intr_conf.rxq) { 2305 virtio_intr_disable(dev); 2306 2307 /* Setup interrupt callback */ 2308 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2309 rte_intr_callback_register(dev->intr_handle, 2310 virtio_interrupt_handler, 2311 dev); 2312 2313 if (virtio_intr_enable(dev) < 0) { 2314 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2315 return -EIO; 2316 } 2317 } 2318 2319 /*Notify the backend 2320 *Otherwise the tap backend might already stop its queue due to fullness. 2321 *vhost backend will have no chance to be waked up 2322 */ 2323 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2324 if (hw->max_queue_pairs > 1) { 2325 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2326 return -EINVAL; 2327 } 2328 2329 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2330 2331 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2332 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2333 /* Flush the old packets */ 2334 virtqueue_rxvq_flush(vq); 2335 virtqueue_notify(vq); 2336 } 2337 2338 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2339 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2340 virtqueue_notify(vq); 2341 } 2342 2343 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2344 2345 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2346 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2347 VIRTQUEUE_DUMP(vq); 2348 } 2349 2350 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2351 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2352 VIRTQUEUE_DUMP(vq); 2353 } 2354 2355 set_rxtx_funcs(dev); 2356 hw->started = 1; 2357 2358 /* Initialize Link state */ 2359 virtio_dev_link_update(dev, 0); 2360 2361 return 0; 2362 } 2363 2364 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2365 { 2366 struct virtio_hw *hw = dev->data->dev_private; 2367 uint16_t nr_vq = virtio_get_nr_vq(hw); 2368 const char *type __rte_unused; 2369 unsigned int i, mbuf_num = 0; 2370 struct virtqueue *vq; 2371 struct rte_mbuf *buf; 2372 int queue_type; 2373 2374 if (hw->vqs == NULL) 2375 return; 2376 2377 for (i = 0; i < nr_vq; i++) { 2378 vq = hw->vqs[i]; 2379 if (!vq) 2380 continue; 2381 2382 queue_type = virtio_get_queue_type(hw, i); 2383 if (queue_type == VTNET_RQ) 2384 type = "rxq"; 2385 else if (queue_type == VTNET_TQ) 2386 type = "txq"; 2387 else 2388 continue; 2389 2390 PMD_INIT_LOG(DEBUG, 2391 "Before freeing %s[%d] used and unused buf", 2392 type, i); 2393 VIRTQUEUE_DUMP(vq); 2394 2395 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2396 rte_pktmbuf_free(buf); 2397 mbuf_num++; 2398 } 2399 2400 PMD_INIT_LOG(DEBUG, 2401 "After freeing %s[%d] used and unused buf", 2402 type, i); 2403 VIRTQUEUE_DUMP(vq); 2404 } 2405 2406 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2407 } 2408 2409 static void 2410 virtio_tx_completed_cleanup(struct rte_eth_dev *dev) 2411 { 2412 struct virtio_hw *hw = dev->data->dev_private; 2413 struct virtqueue *vq; 2414 int qidx; 2415 void (*xmit_cleanup)(struct virtqueue *vq, uint16_t nb_used); 2416 2417 if (virtio_with_packed_queue(hw)) { 2418 if (hw->use_vec_tx) 2419 xmit_cleanup = &virtio_xmit_cleanup_inorder_packed; 2420 else if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) 2421 xmit_cleanup = &virtio_xmit_cleanup_inorder_packed; 2422 else 2423 xmit_cleanup = &virtio_xmit_cleanup_normal_packed; 2424 } else { 2425 if (hw->use_inorder_tx) 2426 xmit_cleanup = &virtio_xmit_cleanup_inorder; 2427 else 2428 xmit_cleanup = &virtio_xmit_cleanup; 2429 } 2430 2431 for (qidx = 0; qidx < hw->max_queue_pairs; qidx++) { 2432 vq = hw->vqs[2 * qidx + VTNET_SQ_TQ_QUEUE_IDX]; 2433 if (vq != NULL) 2434 xmit_cleanup(vq, virtqueue_nused(vq)); 2435 } 2436 } 2437 2438 /* 2439 * Stop device: disable interrupt and mark link down 2440 */ 2441 int 2442 virtio_dev_stop(struct rte_eth_dev *dev) 2443 { 2444 struct virtio_hw *hw = dev->data->dev_private; 2445 struct rte_eth_link link; 2446 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2447 2448 PMD_INIT_LOG(DEBUG, "stop"); 2449 dev->data->dev_started = 0; 2450 2451 rte_spinlock_lock(&hw->state_lock); 2452 if (!hw->started) 2453 goto out_unlock; 2454 hw->started = 0; 2455 2456 virtio_tx_completed_cleanup(dev); 2457 2458 if (intr_conf->lsc || intr_conf->rxq) { 2459 virtio_intr_disable(dev); 2460 2461 /* Reset interrupt callback */ 2462 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2463 rte_intr_callback_unregister(dev->intr_handle, 2464 virtio_interrupt_handler, 2465 dev); 2466 } 2467 } 2468 2469 memset(&link, 0, sizeof(link)); 2470 rte_eth_linkstatus_set(dev, &link); 2471 out_unlock: 2472 rte_spinlock_unlock(&hw->state_lock); 2473 2474 return 0; 2475 } 2476 2477 static int 2478 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2479 { 2480 struct rte_eth_link link; 2481 uint16_t status; 2482 struct virtio_hw *hw = dev->data->dev_private; 2483 2484 memset(&link, 0, sizeof(link)); 2485 link.link_duplex = hw->duplex; 2486 link.link_speed = hw->speed; 2487 link.link_autoneg = ETH_LINK_AUTONEG; 2488 2489 if (!hw->started) { 2490 link.link_status = ETH_LINK_DOWN; 2491 link.link_speed = ETH_SPEED_NUM_NONE; 2492 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2493 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2494 virtio_read_dev_config(hw, 2495 offsetof(struct virtio_net_config, status), 2496 &status, sizeof(status)); 2497 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2498 link.link_status = ETH_LINK_DOWN; 2499 link.link_speed = ETH_SPEED_NUM_NONE; 2500 PMD_INIT_LOG(DEBUG, "Port %d is down", 2501 dev->data->port_id); 2502 } else { 2503 link.link_status = ETH_LINK_UP; 2504 PMD_INIT_LOG(DEBUG, "Port %d is up", 2505 dev->data->port_id); 2506 } 2507 } else { 2508 link.link_status = ETH_LINK_UP; 2509 } 2510 2511 return rte_eth_linkstatus_set(dev, &link); 2512 } 2513 2514 static int 2515 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2516 { 2517 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2518 struct virtio_hw *hw = dev->data->dev_private; 2519 uint64_t offloads = rxmode->offloads; 2520 2521 if (mask & ETH_VLAN_FILTER_MASK) { 2522 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2523 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2524 2525 PMD_DRV_LOG(NOTICE, 2526 "vlan filtering not available on this host"); 2527 2528 return -ENOTSUP; 2529 } 2530 } 2531 2532 if (mask & ETH_VLAN_STRIP_MASK) 2533 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2534 2535 return 0; 2536 } 2537 2538 static int 2539 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2540 { 2541 uint64_t tso_mask, host_features; 2542 struct virtio_hw *hw = dev->data->dev_private; 2543 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2544 2545 dev_info->max_rx_queues = 2546 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2547 dev_info->max_tx_queues = 2548 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2549 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2550 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2551 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2552 dev_info->max_mtu = hw->max_mtu; 2553 2554 host_features = VIRTIO_OPS(hw)->get_features(hw); 2555 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2556 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2557 if (host_features & (1ULL << VIRTIO_NET_F_MRG_RXBUF)) 2558 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_SCATTER; 2559 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2560 dev_info->rx_offload_capa |= 2561 DEV_RX_OFFLOAD_TCP_CKSUM | 2562 DEV_RX_OFFLOAD_UDP_CKSUM; 2563 } 2564 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2565 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2566 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2567 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2568 if ((host_features & tso_mask) == tso_mask) 2569 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2570 2571 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2572 DEV_TX_OFFLOAD_VLAN_INSERT; 2573 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2574 dev_info->tx_offload_capa |= 2575 DEV_TX_OFFLOAD_UDP_CKSUM | 2576 DEV_TX_OFFLOAD_TCP_CKSUM; 2577 } 2578 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2579 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2580 if ((host_features & tso_mask) == tso_mask) 2581 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2582 2583 if (host_features & (1ULL << VIRTIO_F_RING_PACKED)) { 2584 /* 2585 * According to 2.7 Packed Virtqueues, 2586 * 2.7.10.1 Structure Size and Alignment: 2587 * The Queue Size value does not have to be a power of 2. 2588 */ 2589 dev_info->rx_desc_lim.nb_max = UINT16_MAX; 2590 dev_info->tx_desc_lim.nb_max = UINT16_MAX; 2591 } else { 2592 /* 2593 * According to 2.6 Split Virtqueues: 2594 * Queue Size value is always a power of 2. The maximum Queue 2595 * Size value is 32768. 2596 */ 2597 dev_info->rx_desc_lim.nb_max = 32768; 2598 dev_info->tx_desc_lim.nb_max = 32768; 2599 } 2600 /* 2601 * Actual minimum is not the same for virtqueues of different kinds, 2602 * but to avoid tangling the code with separate branches, rely on 2603 * default thresholds since desc number must be at least of their size. 2604 */ 2605 dev_info->rx_desc_lim.nb_min = RTE_MAX(DEFAULT_RX_FREE_THRESH, 2606 RTE_VIRTIO_VPMD_RX_REARM_THRESH); 2607 dev_info->tx_desc_lim.nb_min = DEFAULT_TX_FREE_THRESH; 2608 dev_info->rx_desc_lim.nb_align = 1; 2609 dev_info->tx_desc_lim.nb_align = 1; 2610 2611 return 0; 2612 } 2613 2614 /* 2615 * It enables testpmd to collect per queue stats. 2616 */ 2617 static int 2618 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2619 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2620 __rte_unused uint8_t is_rx) 2621 { 2622 return 0; 2623 } 2624 2625 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_init, init, NOTICE); 2626 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_driver, driver, NOTICE); 2627