1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2016 Intel Corporation 3 */ 4 5 #include <stdint.h> 6 #include <string.h> 7 #include <stdio.h> 8 #include <errno.h> 9 #include <unistd.h> 10 11 #include <ethdev_driver.h> 12 #include <rte_memcpy.h> 13 #include <rte_string_fns.h> 14 #include <rte_memzone.h> 15 #include <rte_malloc.h> 16 #include <rte_branch_prediction.h> 17 #include <rte_ether.h> 18 #include <rte_ip.h> 19 #include <rte_arp.h> 20 #include <rte_common.h> 21 #include <rte_errno.h> 22 #include <rte_cpuflags.h> 23 #include <rte_vect.h> 24 #include <rte_memory.h> 25 #include <rte_eal_paging.h> 26 #include <rte_eal.h> 27 #include <rte_dev.h> 28 #include <rte_cycles.h> 29 #include <rte_kvargs.h> 30 31 #include "virtio_ethdev.h" 32 #include "virtio.h" 33 #include "virtio_logs.h" 34 #include "virtqueue.h" 35 #include "virtio_rxtx.h" 36 #include "virtio_user/virtio_user_dev.h" 37 38 static int virtio_dev_configure(struct rte_eth_dev *dev); 39 static int virtio_dev_start(struct rte_eth_dev *dev); 40 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev); 41 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev); 42 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 43 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 44 static uint32_t virtio_dev_speed_capa_get(uint32_t speed); 45 static int virtio_dev_devargs_parse(struct rte_devargs *devargs, 46 uint32_t *speed, 47 int *vectorized); 48 static int virtio_dev_info_get(struct rte_eth_dev *dev, 49 struct rte_eth_dev_info *dev_info); 50 static int virtio_dev_link_update(struct rte_eth_dev *dev, 51 int wait_to_complete); 52 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask); 53 54 static void virtio_set_hwaddr(struct virtio_hw *hw); 55 static void virtio_get_hwaddr(struct virtio_hw *hw); 56 57 static int virtio_dev_stats_get(struct rte_eth_dev *dev, 58 struct rte_eth_stats *stats); 59 static int virtio_dev_xstats_get(struct rte_eth_dev *dev, 60 struct rte_eth_xstat *xstats, unsigned n); 61 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 62 struct rte_eth_xstat_name *xstats_names, 63 unsigned limit); 64 static int virtio_dev_stats_reset(struct rte_eth_dev *dev); 65 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev); 66 static int virtio_vlan_filter_set(struct rte_eth_dev *dev, 67 uint16_t vlan_id, int on); 68 static int virtio_mac_addr_add(struct rte_eth_dev *dev, 69 struct rte_ether_addr *mac_addr, 70 uint32_t index, uint32_t vmdq); 71 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); 72 static int virtio_mac_addr_set(struct rte_eth_dev *dev, 73 struct rte_ether_addr *mac_addr); 74 75 static int virtio_intr_disable(struct rte_eth_dev *dev); 76 77 static int virtio_dev_queue_stats_mapping_set( 78 struct rte_eth_dev *eth_dev, 79 uint16_t queue_id, 80 uint8_t stat_idx, 81 uint8_t is_rx); 82 83 static void virtio_notify_peers(struct rte_eth_dev *dev); 84 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 85 86 struct rte_virtio_xstats_name_off { 87 char name[RTE_ETH_XSTATS_NAME_SIZE]; 88 unsigned offset; 89 }; 90 91 /* [rt]x_qX_ is prepended to the name string here */ 92 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 93 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 94 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 95 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 96 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 97 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 98 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 99 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 100 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 101 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 102 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 103 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 104 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 105 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 106 }; 107 108 /* [rt]x_qX_ is prepended to the name string here */ 109 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 110 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 111 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 112 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 113 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 114 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 115 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 116 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 117 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 118 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 119 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 120 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 121 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 122 }; 123 124 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 125 sizeof(rte_virtio_rxq_stat_strings[0])) 126 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 127 sizeof(rte_virtio_txq_stat_strings[0])) 128 129 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 130 131 static struct virtio_pmd_ctrl * 132 virtio_send_command_packed(struct virtnet_ctl *cvq, 133 struct virtio_pmd_ctrl *ctrl, 134 int *dlen, int pkt_num) 135 { 136 struct virtqueue *vq = virtnet_cq_to_vq(cvq); 137 int head; 138 struct vring_packed_desc *desc = vq->vq_packed.ring.desc; 139 struct virtio_pmd_ctrl *result; 140 uint16_t flags; 141 int sum = 0; 142 int nb_descs = 0; 143 int k; 144 145 /* 146 * Format is enforced in qemu code: 147 * One TX packet for header; 148 * At least one TX packet per argument; 149 * One RX packet for ACK. 150 */ 151 head = vq->vq_avail_idx; 152 flags = vq->vq_packed.cached_flags; 153 desc[head].addr = cvq->virtio_net_hdr_mem; 154 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 155 vq->vq_free_cnt--; 156 nb_descs++; 157 if (++vq->vq_avail_idx >= vq->vq_nentries) { 158 vq->vq_avail_idx -= vq->vq_nentries; 159 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 160 } 161 162 for (k = 0; k < pkt_num; k++) { 163 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 164 + sizeof(struct virtio_net_ctrl_hdr) 165 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 166 desc[vq->vq_avail_idx].len = dlen[k]; 167 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT | 168 vq->vq_packed.cached_flags; 169 sum += dlen[k]; 170 vq->vq_free_cnt--; 171 nb_descs++; 172 if (++vq->vq_avail_idx >= vq->vq_nentries) { 173 vq->vq_avail_idx -= vq->vq_nentries; 174 vq->vq_packed.cached_flags ^= 175 VRING_PACKED_DESC_F_AVAIL_USED; 176 } 177 } 178 179 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 180 + sizeof(struct virtio_net_ctrl_hdr); 181 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 182 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE | 183 vq->vq_packed.cached_flags; 184 vq->vq_free_cnt--; 185 nb_descs++; 186 if (++vq->vq_avail_idx >= vq->vq_nentries) { 187 vq->vq_avail_idx -= vq->vq_nentries; 188 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 189 } 190 191 virtqueue_store_flags_packed(&desc[head], VRING_DESC_F_NEXT | flags, 192 vq->hw->weak_barriers); 193 194 virtio_wmb(vq->hw->weak_barriers); 195 virtqueue_notify(vq); 196 197 /* wait for used desc in virtqueue 198 * desc_is_used has a load-acquire or rte_io_rmb inside 199 */ 200 while (!desc_is_used(&desc[head], vq)) 201 usleep(100); 202 203 /* now get used descriptors */ 204 vq->vq_free_cnt += nb_descs; 205 vq->vq_used_cons_idx += nb_descs; 206 if (vq->vq_used_cons_idx >= vq->vq_nentries) { 207 vq->vq_used_cons_idx -= vq->vq_nentries; 208 vq->vq_packed.used_wrap_counter ^= 1; 209 } 210 211 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n" 212 "vq->vq_avail_idx=%d\n" 213 "vq->vq_used_cons_idx=%d\n" 214 "vq->vq_packed.cached_flags=0x%x\n" 215 "vq->vq_packed.used_wrap_counter=%d\n", 216 vq->vq_free_cnt, 217 vq->vq_avail_idx, 218 vq->vq_used_cons_idx, 219 vq->vq_packed.cached_flags, 220 vq->vq_packed.used_wrap_counter); 221 222 result = cvq->virtio_net_hdr_mz->addr; 223 return result; 224 } 225 226 static struct virtio_pmd_ctrl * 227 virtio_send_command_split(struct virtnet_ctl *cvq, 228 struct virtio_pmd_ctrl *ctrl, 229 int *dlen, int pkt_num) 230 { 231 struct virtio_pmd_ctrl *result; 232 struct virtqueue *vq = virtnet_cq_to_vq(cvq); 233 uint32_t head, i; 234 int k, sum = 0; 235 236 head = vq->vq_desc_head_idx; 237 238 /* 239 * Format is enforced in qemu code: 240 * One TX packet for header; 241 * At least one TX packet per argument; 242 * One RX packet for ACK. 243 */ 244 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT; 245 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem; 246 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 247 vq->vq_free_cnt--; 248 i = vq->vq_split.ring.desc[head].next; 249 250 for (k = 0; k < pkt_num; k++) { 251 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT; 252 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 253 + sizeof(struct virtio_net_ctrl_hdr) 254 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 255 vq->vq_split.ring.desc[i].len = dlen[k]; 256 sum += dlen[k]; 257 vq->vq_free_cnt--; 258 i = vq->vq_split.ring.desc[i].next; 259 } 260 261 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE; 262 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 263 + sizeof(struct virtio_net_ctrl_hdr); 264 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status); 265 vq->vq_free_cnt--; 266 267 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next; 268 269 vq_update_avail_ring(vq, head); 270 vq_update_avail_idx(vq); 271 272 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 273 274 virtqueue_notify(vq); 275 276 while (virtqueue_nused(vq) == 0) 277 usleep(100); 278 279 while (virtqueue_nused(vq)) { 280 uint32_t idx, desc_idx, used_idx; 281 struct vring_used_elem *uep; 282 283 used_idx = (uint32_t)(vq->vq_used_cons_idx 284 & (vq->vq_nentries - 1)); 285 uep = &vq->vq_split.ring.used->ring[used_idx]; 286 idx = (uint32_t) uep->id; 287 desc_idx = idx; 288 289 while (vq->vq_split.ring.desc[desc_idx].flags & 290 VRING_DESC_F_NEXT) { 291 desc_idx = vq->vq_split.ring.desc[desc_idx].next; 292 vq->vq_free_cnt++; 293 } 294 295 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx; 296 vq->vq_desc_head_idx = idx; 297 298 vq->vq_used_cons_idx++; 299 vq->vq_free_cnt++; 300 } 301 302 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 303 vq->vq_free_cnt, vq->vq_desc_head_idx); 304 305 result = cvq->virtio_net_hdr_mz->addr; 306 return result; 307 } 308 309 static int 310 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 311 int *dlen, int pkt_num) 312 { 313 virtio_net_ctrl_ack status = ~0; 314 struct virtio_pmd_ctrl *result; 315 struct virtqueue *vq; 316 317 ctrl->status = status; 318 319 if (!cvq) { 320 PMD_INIT_LOG(ERR, "Control queue is not supported."); 321 return -1; 322 } 323 324 rte_spinlock_lock(&cvq->lock); 325 vq = virtnet_cq_to_vq(cvq); 326 327 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 328 "vq->hw->cvq = %p vq = %p", 329 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 330 331 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 332 rte_spinlock_unlock(&cvq->lock); 333 return -1; 334 } 335 336 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 337 sizeof(struct virtio_pmd_ctrl)); 338 339 if (virtio_with_packed_queue(vq->hw)) 340 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num); 341 else 342 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num); 343 344 rte_spinlock_unlock(&cvq->lock); 345 return result->status; 346 } 347 348 static int 349 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 350 { 351 struct virtio_hw *hw = dev->data->dev_private; 352 struct virtio_pmd_ctrl ctrl; 353 int dlen[1]; 354 int ret; 355 356 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 357 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 358 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 359 360 dlen[0] = sizeof(uint16_t); 361 362 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 363 if (ret) { 364 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 365 "failed, this is too late now..."); 366 return -EINVAL; 367 } 368 369 return 0; 370 } 371 372 static void 373 virtio_dev_queue_release(void *queue __rte_unused) 374 { 375 /* do nothing */ 376 } 377 378 static uint16_t 379 virtio_get_nr_vq(struct virtio_hw *hw) 380 { 381 uint16_t nr_vq = hw->max_queue_pairs * 2; 382 383 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 384 nr_vq += 1; 385 386 return nr_vq; 387 } 388 389 static void 390 virtio_init_vring(struct virtqueue *vq) 391 { 392 int size = vq->vq_nentries; 393 uint8_t *ring_mem = vq->vq_ring_virt_mem; 394 395 PMD_INIT_FUNC_TRACE(); 396 397 memset(ring_mem, 0, vq->vq_ring_size); 398 399 vq->vq_used_cons_idx = 0; 400 vq->vq_desc_head_idx = 0; 401 vq->vq_avail_idx = 0; 402 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 403 vq->vq_free_cnt = vq->vq_nentries; 404 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 405 if (virtio_with_packed_queue(vq->hw)) { 406 vring_init_packed(&vq->vq_packed.ring, ring_mem, 407 VIRTIO_VRING_ALIGN, size); 408 vring_desc_init_packed(vq, size); 409 } else { 410 struct vring *vr = &vq->vq_split.ring; 411 412 vring_init_split(vr, ring_mem, VIRTIO_VRING_ALIGN, size); 413 vring_desc_init_split(vr->desc, size); 414 } 415 /* 416 * Disable device(host) interrupting guest 417 */ 418 virtqueue_disable_intr(vq); 419 } 420 421 static int 422 virtio_init_queue(struct rte_eth_dev *dev, uint16_t queue_idx) 423 { 424 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 425 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 426 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 427 unsigned int vq_size, size; 428 struct virtio_hw *hw = dev->data->dev_private; 429 struct virtnet_rx *rxvq = NULL; 430 struct virtnet_tx *txvq = NULL; 431 struct virtnet_ctl *cvq = NULL; 432 struct virtqueue *vq; 433 size_t sz_hdr_mz = 0; 434 void *sw_ring = NULL; 435 int queue_type = virtio_get_queue_type(hw, queue_idx); 436 int ret; 437 int numa_node = dev->device->numa_node; 438 struct rte_mbuf *fake_mbuf = NULL; 439 440 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 441 queue_idx, numa_node); 442 443 /* 444 * Read the virtqueue size from the Queue Size field 445 * Always power of 2 and if 0 virtqueue does not exist 446 */ 447 vq_size = VIRTIO_OPS(hw)->get_queue_num(hw, queue_idx); 448 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 449 if (vq_size == 0) { 450 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 451 return -EINVAL; 452 } 453 454 if (!virtio_with_packed_queue(hw) && !rte_is_power_of_2(vq_size)) { 455 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2"); 456 return -EINVAL; 457 } 458 459 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 460 dev->data->port_id, queue_idx); 461 462 size = RTE_ALIGN_CEIL(sizeof(*vq) + 463 vq_size * sizeof(struct vq_desc_extra), 464 RTE_CACHE_LINE_SIZE); 465 if (queue_type == VTNET_TQ) { 466 /* 467 * For each xmit packet, allocate a virtio_net_hdr 468 * and indirect ring elements 469 */ 470 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 471 } else if (queue_type == VTNET_CQ) { 472 /* Allocate a page for control vq command, data and status */ 473 sz_hdr_mz = rte_mem_page_size(); 474 } 475 476 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 477 numa_node); 478 if (vq == NULL) { 479 PMD_INIT_LOG(ERR, "can not allocate vq"); 480 return -ENOMEM; 481 } 482 hw->vqs[queue_idx] = vq; 483 484 vq->hw = hw; 485 vq->vq_queue_index = queue_idx; 486 vq->vq_nentries = vq_size; 487 if (virtio_with_packed_queue(hw)) { 488 vq->vq_packed.used_wrap_counter = 1; 489 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL; 490 vq->vq_packed.event_flags_shadow = 0; 491 if (queue_type == VTNET_RQ) 492 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE; 493 } 494 495 /* 496 * Reserve a memzone for vring elements 497 */ 498 size = vring_size(hw, vq_size, VIRTIO_VRING_ALIGN); 499 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_VRING_ALIGN); 500 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 501 size, vq->vq_ring_size); 502 503 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 504 numa_node, RTE_MEMZONE_IOVA_CONTIG, 505 VIRTIO_VRING_ALIGN); 506 if (mz == NULL) { 507 if (rte_errno == EEXIST) 508 mz = rte_memzone_lookup(vq_name); 509 if (mz == NULL) { 510 ret = -ENOMEM; 511 goto free_vq; 512 } 513 } 514 515 memset(mz->addr, 0, mz->len); 516 517 vq->vq_ring_mem = mz->iova; 518 vq->vq_ring_virt_mem = mz->addr; 519 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 520 (uint64_t)mz->iova); 521 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 522 (uint64_t)(uintptr_t)mz->addr); 523 524 virtio_init_vring(vq); 525 526 if (sz_hdr_mz) { 527 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 528 dev->data->port_id, queue_idx); 529 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 530 numa_node, RTE_MEMZONE_IOVA_CONTIG, 531 RTE_CACHE_LINE_SIZE); 532 if (hdr_mz == NULL) { 533 if (rte_errno == EEXIST) 534 hdr_mz = rte_memzone_lookup(vq_hdr_name); 535 if (hdr_mz == NULL) { 536 ret = -ENOMEM; 537 goto free_mz; 538 } 539 } 540 } 541 542 if (queue_type == VTNET_RQ) { 543 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 544 sizeof(vq->sw_ring[0]); 545 546 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 547 RTE_CACHE_LINE_SIZE, numa_node); 548 if (!sw_ring) { 549 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 550 ret = -ENOMEM; 551 goto free_hdr_mz; 552 } 553 554 fake_mbuf = rte_zmalloc_socket("sw_ring", sizeof(*fake_mbuf), 555 RTE_CACHE_LINE_SIZE, numa_node); 556 if (!fake_mbuf) { 557 PMD_INIT_LOG(ERR, "can not allocate fake mbuf"); 558 ret = -ENOMEM; 559 goto free_sw_ring; 560 } 561 562 vq->sw_ring = sw_ring; 563 rxvq = &vq->rxq; 564 rxvq->port_id = dev->data->port_id; 565 rxvq->mz = mz; 566 rxvq->fake_mbuf = fake_mbuf; 567 } else if (queue_type == VTNET_TQ) { 568 txvq = &vq->txq; 569 txvq->port_id = dev->data->port_id; 570 txvq->mz = mz; 571 txvq->virtio_net_hdr_mz = hdr_mz; 572 txvq->virtio_net_hdr_mem = hdr_mz->iova; 573 } else if (queue_type == VTNET_CQ) { 574 cvq = &vq->cq; 575 cvq->mz = mz; 576 cvq->virtio_net_hdr_mz = hdr_mz; 577 cvq->virtio_net_hdr_mem = hdr_mz->iova; 578 memset(cvq->virtio_net_hdr_mz->addr, 0, rte_mem_page_size()); 579 580 hw->cvq = cvq; 581 } 582 583 if (queue_type == VTNET_TQ) { 584 struct virtio_tx_region *txr; 585 unsigned int i; 586 587 txr = hdr_mz->addr; 588 memset(txr, 0, vq_size * sizeof(*txr)); 589 for (i = 0; i < vq_size; i++) { 590 /* first indirect descriptor is always the tx header */ 591 if (!virtio_with_packed_queue(hw)) { 592 struct vring_desc *start_dp = txr[i].tx_indir; 593 vring_desc_init_split(start_dp, 594 RTE_DIM(txr[i].tx_indir)); 595 start_dp->addr = txvq->virtio_net_hdr_mem 596 + i * sizeof(*txr) 597 + offsetof(struct virtio_tx_region, 598 tx_hdr); 599 start_dp->len = hw->vtnet_hdr_size; 600 start_dp->flags = VRING_DESC_F_NEXT; 601 } else { 602 struct vring_packed_desc *start_dp = 603 txr[i].tx_packed_indir; 604 vring_desc_init_indirect_packed(start_dp, 605 RTE_DIM(txr[i].tx_packed_indir)); 606 start_dp->addr = txvq->virtio_net_hdr_mem 607 + i * sizeof(*txr) 608 + offsetof(struct virtio_tx_region, 609 tx_hdr); 610 start_dp->len = hw->vtnet_hdr_size; 611 } 612 } 613 } 614 615 if (VIRTIO_OPS(hw)->setup_queue(hw, vq) < 0) { 616 PMD_INIT_LOG(ERR, "setup_queue failed"); 617 ret = -EINVAL; 618 goto clean_vq; 619 } 620 621 return 0; 622 623 clean_vq: 624 hw->cvq = NULL; 625 rte_free(fake_mbuf); 626 free_sw_ring: 627 rte_free(sw_ring); 628 free_hdr_mz: 629 rte_memzone_free(hdr_mz); 630 free_mz: 631 rte_memzone_free(mz); 632 free_vq: 633 rte_free(vq); 634 635 return ret; 636 } 637 638 static void 639 virtio_free_queues(struct virtio_hw *hw) 640 { 641 uint16_t nr_vq = virtio_get_nr_vq(hw); 642 struct virtqueue *vq; 643 int queue_type; 644 uint16_t i; 645 646 if (hw->vqs == NULL) 647 return; 648 649 for (i = 0; i < nr_vq; i++) { 650 vq = hw->vqs[i]; 651 if (!vq) 652 continue; 653 654 queue_type = virtio_get_queue_type(hw, i); 655 if (queue_type == VTNET_RQ) { 656 rte_free(vq->rxq.fake_mbuf); 657 rte_free(vq->sw_ring); 658 rte_memzone_free(vq->rxq.mz); 659 } else if (queue_type == VTNET_TQ) { 660 rte_memzone_free(vq->txq.mz); 661 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 662 } else { 663 rte_memzone_free(vq->cq.mz); 664 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 665 } 666 667 rte_free(vq); 668 hw->vqs[i] = NULL; 669 } 670 671 rte_free(hw->vqs); 672 hw->vqs = NULL; 673 } 674 675 static int 676 virtio_alloc_queues(struct rte_eth_dev *dev) 677 { 678 struct virtio_hw *hw = dev->data->dev_private; 679 uint16_t nr_vq = virtio_get_nr_vq(hw); 680 uint16_t i; 681 int ret; 682 683 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 684 if (!hw->vqs) { 685 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 686 return -ENOMEM; 687 } 688 689 for (i = 0; i < nr_vq; i++) { 690 ret = virtio_init_queue(dev, i); 691 if (ret < 0) { 692 virtio_free_queues(hw); 693 return ret; 694 } 695 } 696 697 return 0; 698 } 699 700 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 701 702 int 703 virtio_dev_close(struct rte_eth_dev *dev) 704 { 705 struct virtio_hw *hw = dev->data->dev_private; 706 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 707 708 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 709 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 710 return 0; 711 712 if (!hw->opened) 713 return 0; 714 hw->opened = 0; 715 716 /* reset the NIC */ 717 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 718 VIRTIO_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 719 if (intr_conf->rxq) 720 virtio_queues_unbind_intr(dev); 721 722 if (intr_conf->lsc || intr_conf->rxq) { 723 virtio_intr_disable(dev); 724 rte_intr_efd_disable(dev->intr_handle); 725 rte_free(dev->intr_handle->intr_vec); 726 dev->intr_handle->intr_vec = NULL; 727 } 728 729 virtio_reset(hw); 730 virtio_dev_free_mbufs(dev); 731 virtio_free_queues(hw); 732 733 return VIRTIO_OPS(hw)->dev_close(hw); 734 } 735 736 static int 737 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 738 { 739 struct virtio_hw *hw = dev->data->dev_private; 740 struct virtio_pmd_ctrl ctrl; 741 int dlen[1]; 742 int ret; 743 744 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 745 PMD_INIT_LOG(INFO, "host does not support rx control"); 746 return -ENOTSUP; 747 } 748 749 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 750 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 751 ctrl.data[0] = 1; 752 dlen[0] = 1; 753 754 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 755 if (ret) { 756 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 757 return -EAGAIN; 758 } 759 760 return 0; 761 } 762 763 static int 764 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 765 { 766 struct virtio_hw *hw = dev->data->dev_private; 767 struct virtio_pmd_ctrl ctrl; 768 int dlen[1]; 769 int ret; 770 771 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 772 PMD_INIT_LOG(INFO, "host does not support rx control"); 773 return -ENOTSUP; 774 } 775 776 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 777 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 778 ctrl.data[0] = 0; 779 dlen[0] = 1; 780 781 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 782 if (ret) { 783 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 784 return -EAGAIN; 785 } 786 787 return 0; 788 } 789 790 static int 791 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 792 { 793 struct virtio_hw *hw = dev->data->dev_private; 794 struct virtio_pmd_ctrl ctrl; 795 int dlen[1]; 796 int ret; 797 798 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 799 PMD_INIT_LOG(INFO, "host does not support rx control"); 800 return -ENOTSUP; 801 } 802 803 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 804 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 805 ctrl.data[0] = 1; 806 dlen[0] = 1; 807 808 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 809 if (ret) { 810 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 811 return -EAGAIN; 812 } 813 814 return 0; 815 } 816 817 static int 818 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 819 { 820 struct virtio_hw *hw = dev->data->dev_private; 821 struct virtio_pmd_ctrl ctrl; 822 int dlen[1]; 823 int ret; 824 825 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 826 PMD_INIT_LOG(INFO, "host does not support rx control"); 827 return -ENOTSUP; 828 } 829 830 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 831 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 832 ctrl.data[0] = 0; 833 dlen[0] = 1; 834 835 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 836 if (ret) { 837 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 838 return -EAGAIN; 839 } 840 841 return 0; 842 } 843 844 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 845 static int 846 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 847 { 848 struct virtio_hw *hw = dev->data->dev_private; 849 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 850 hw->vtnet_hdr_size; 851 uint32_t frame_size = mtu + ether_hdr_len; 852 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 853 854 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 855 856 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 857 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 858 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 859 return -EINVAL; 860 } 861 return 0; 862 } 863 864 static int 865 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 866 { 867 struct virtio_hw *hw = dev->data->dev_private; 868 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 869 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 870 871 virtqueue_enable_intr(vq); 872 virtio_mb(hw->weak_barriers); 873 return 0; 874 } 875 876 static int 877 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 878 { 879 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 880 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 881 882 virtqueue_disable_intr(vq); 883 return 0; 884 } 885 886 /* 887 * dev_ops for virtio, bare necessities for basic operation 888 */ 889 static const struct eth_dev_ops virtio_eth_dev_ops = { 890 .dev_configure = virtio_dev_configure, 891 .dev_start = virtio_dev_start, 892 .dev_stop = virtio_dev_stop, 893 .dev_close = virtio_dev_close, 894 .promiscuous_enable = virtio_dev_promiscuous_enable, 895 .promiscuous_disable = virtio_dev_promiscuous_disable, 896 .allmulticast_enable = virtio_dev_allmulticast_enable, 897 .allmulticast_disable = virtio_dev_allmulticast_disable, 898 .mtu_set = virtio_mtu_set, 899 .dev_infos_get = virtio_dev_info_get, 900 .stats_get = virtio_dev_stats_get, 901 .xstats_get = virtio_dev_xstats_get, 902 .xstats_get_names = virtio_dev_xstats_get_names, 903 .stats_reset = virtio_dev_stats_reset, 904 .xstats_reset = virtio_dev_stats_reset, 905 .link_update = virtio_dev_link_update, 906 .vlan_offload_set = virtio_dev_vlan_offload_set, 907 .rx_queue_setup = virtio_dev_rx_queue_setup, 908 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 909 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 910 .rx_queue_release = virtio_dev_queue_release, 911 .tx_queue_setup = virtio_dev_tx_queue_setup, 912 .tx_queue_release = virtio_dev_queue_release, 913 /* collect stats per queue */ 914 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 915 .vlan_filter_set = virtio_vlan_filter_set, 916 .mac_addr_add = virtio_mac_addr_add, 917 .mac_addr_remove = virtio_mac_addr_remove, 918 .mac_addr_set = virtio_mac_addr_set, 919 }; 920 921 /* 922 * dev_ops for virtio-user in secondary processes, as we just have 923 * some limited supports currently. 924 */ 925 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 926 .dev_infos_get = virtio_dev_info_get, 927 .stats_get = virtio_dev_stats_get, 928 .xstats_get = virtio_dev_xstats_get, 929 .xstats_get_names = virtio_dev_xstats_get_names, 930 .stats_reset = virtio_dev_stats_reset, 931 .xstats_reset = virtio_dev_stats_reset, 932 /* collect stats per queue */ 933 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 934 }; 935 936 static void 937 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 938 { 939 unsigned i; 940 941 for (i = 0; i < dev->data->nb_tx_queues; i++) { 942 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 943 if (txvq == NULL) 944 continue; 945 946 stats->opackets += txvq->stats.packets; 947 stats->obytes += txvq->stats.bytes; 948 949 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 950 stats->q_opackets[i] = txvq->stats.packets; 951 stats->q_obytes[i] = txvq->stats.bytes; 952 } 953 } 954 955 for (i = 0; i < dev->data->nb_rx_queues; i++) { 956 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 957 if (rxvq == NULL) 958 continue; 959 960 stats->ipackets += rxvq->stats.packets; 961 stats->ibytes += rxvq->stats.bytes; 962 stats->ierrors += rxvq->stats.errors; 963 964 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 965 stats->q_ipackets[i] = rxvq->stats.packets; 966 stats->q_ibytes[i] = rxvq->stats.bytes; 967 } 968 } 969 970 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 971 } 972 973 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 974 struct rte_eth_xstat_name *xstats_names, 975 __rte_unused unsigned limit) 976 { 977 unsigned i; 978 unsigned count = 0; 979 unsigned t; 980 981 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 982 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 983 984 if (xstats_names != NULL) { 985 /* Note: limit checked in rte_eth_xstats_names() */ 986 987 for (i = 0; i < dev->data->nb_rx_queues; i++) { 988 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 989 if (rxvq == NULL) 990 continue; 991 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 992 snprintf(xstats_names[count].name, 993 sizeof(xstats_names[count].name), 994 "rx_q%u_%s", i, 995 rte_virtio_rxq_stat_strings[t].name); 996 count++; 997 } 998 } 999 1000 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1001 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1002 if (txvq == NULL) 1003 continue; 1004 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1005 snprintf(xstats_names[count].name, 1006 sizeof(xstats_names[count].name), 1007 "tx_q%u_%s", i, 1008 rte_virtio_txq_stat_strings[t].name); 1009 count++; 1010 } 1011 } 1012 return count; 1013 } 1014 return nstats; 1015 } 1016 1017 static int 1018 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1019 unsigned n) 1020 { 1021 unsigned i; 1022 unsigned count = 0; 1023 1024 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1025 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1026 1027 if (n < nstats) 1028 return nstats; 1029 1030 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1031 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1032 1033 if (rxvq == NULL) 1034 continue; 1035 1036 unsigned t; 1037 1038 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1039 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1040 rte_virtio_rxq_stat_strings[t].offset); 1041 xstats[count].id = count; 1042 count++; 1043 } 1044 } 1045 1046 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1047 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1048 1049 if (txvq == NULL) 1050 continue; 1051 1052 unsigned t; 1053 1054 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1055 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1056 rte_virtio_txq_stat_strings[t].offset); 1057 xstats[count].id = count; 1058 count++; 1059 } 1060 } 1061 1062 return count; 1063 } 1064 1065 static int 1066 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1067 { 1068 virtio_update_stats(dev, stats); 1069 1070 return 0; 1071 } 1072 1073 static int 1074 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1075 { 1076 unsigned int i; 1077 1078 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1079 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1080 if (txvq == NULL) 1081 continue; 1082 1083 txvq->stats.packets = 0; 1084 txvq->stats.bytes = 0; 1085 txvq->stats.multicast = 0; 1086 txvq->stats.broadcast = 0; 1087 memset(txvq->stats.size_bins, 0, 1088 sizeof(txvq->stats.size_bins[0]) * 8); 1089 } 1090 1091 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1092 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1093 if (rxvq == NULL) 1094 continue; 1095 1096 rxvq->stats.packets = 0; 1097 rxvq->stats.bytes = 0; 1098 rxvq->stats.errors = 0; 1099 rxvq->stats.multicast = 0; 1100 rxvq->stats.broadcast = 0; 1101 memset(rxvq->stats.size_bins, 0, 1102 sizeof(rxvq->stats.size_bins[0]) * 8); 1103 } 1104 1105 return 0; 1106 } 1107 1108 static void 1109 virtio_set_hwaddr(struct virtio_hw *hw) 1110 { 1111 virtio_write_dev_config(hw, 1112 offsetof(struct virtio_net_config, mac), 1113 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1114 } 1115 1116 static void 1117 virtio_get_hwaddr(struct virtio_hw *hw) 1118 { 1119 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) { 1120 virtio_read_dev_config(hw, 1121 offsetof(struct virtio_net_config, mac), 1122 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1123 } else { 1124 rte_eth_random_addr(&hw->mac_addr[0]); 1125 virtio_set_hwaddr(hw); 1126 } 1127 } 1128 1129 static int 1130 virtio_mac_table_set(struct virtio_hw *hw, 1131 const struct virtio_net_ctrl_mac *uc, 1132 const struct virtio_net_ctrl_mac *mc) 1133 { 1134 struct virtio_pmd_ctrl ctrl; 1135 int err, len[2]; 1136 1137 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1138 PMD_DRV_LOG(INFO, "host does not support mac table"); 1139 return -1; 1140 } 1141 1142 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1143 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1144 1145 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1146 memcpy(ctrl.data, uc, len[0]); 1147 1148 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 1149 memcpy(ctrl.data + len[0], mc, len[1]); 1150 1151 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1152 if (err != 0) 1153 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1154 return err; 1155 } 1156 1157 static int 1158 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 1159 uint32_t index, uint32_t vmdq __rte_unused) 1160 { 1161 struct virtio_hw *hw = dev->data->dev_private; 1162 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 1163 unsigned int i; 1164 struct virtio_net_ctrl_mac *uc, *mc; 1165 1166 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1167 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1168 return -EINVAL; 1169 } 1170 1171 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1172 sizeof(uc->entries)); 1173 uc->entries = 0; 1174 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1175 sizeof(mc->entries)); 1176 mc->entries = 0; 1177 1178 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1179 const struct rte_ether_addr *addr 1180 = (i == index) ? mac_addr : addrs + i; 1181 struct virtio_net_ctrl_mac *tbl 1182 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1183 1184 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1185 } 1186 1187 return virtio_mac_table_set(hw, uc, mc); 1188 } 1189 1190 static void 1191 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1192 { 1193 struct virtio_hw *hw = dev->data->dev_private; 1194 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1195 struct virtio_net_ctrl_mac *uc, *mc; 1196 unsigned int i; 1197 1198 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1199 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1200 return; 1201 } 1202 1203 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1204 sizeof(uc->entries)); 1205 uc->entries = 0; 1206 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1207 sizeof(mc->entries)); 1208 mc->entries = 0; 1209 1210 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1211 struct virtio_net_ctrl_mac *tbl; 1212 1213 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1214 continue; 1215 1216 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1217 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1218 RTE_ETHER_ADDR_LEN); 1219 } 1220 1221 virtio_mac_table_set(hw, uc, mc); 1222 } 1223 1224 static int 1225 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1226 { 1227 struct virtio_hw *hw = dev->data->dev_private; 1228 1229 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1230 1231 /* Use atomic update if available */ 1232 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1233 struct virtio_pmd_ctrl ctrl; 1234 int len = RTE_ETHER_ADDR_LEN; 1235 1236 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1237 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1238 1239 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1240 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1241 } 1242 1243 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC)) 1244 return -ENOTSUP; 1245 1246 virtio_set_hwaddr(hw); 1247 return 0; 1248 } 1249 1250 static int 1251 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1252 { 1253 struct virtio_hw *hw = dev->data->dev_private; 1254 struct virtio_pmd_ctrl ctrl; 1255 int len; 1256 1257 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1258 return -ENOTSUP; 1259 1260 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1261 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1262 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1263 len = sizeof(vlan_id); 1264 1265 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1266 } 1267 1268 static int 1269 virtio_intr_unmask(struct rte_eth_dev *dev) 1270 { 1271 struct virtio_hw *hw = dev->data->dev_private; 1272 1273 if (rte_intr_ack(dev->intr_handle) < 0) 1274 return -1; 1275 1276 if (VIRTIO_OPS(hw)->intr_detect) 1277 VIRTIO_OPS(hw)->intr_detect(hw); 1278 1279 return 0; 1280 } 1281 1282 static int 1283 virtio_intr_enable(struct rte_eth_dev *dev) 1284 { 1285 struct virtio_hw *hw = dev->data->dev_private; 1286 1287 if (rte_intr_enable(dev->intr_handle) < 0) 1288 return -1; 1289 1290 if (VIRTIO_OPS(hw)->intr_detect) 1291 VIRTIO_OPS(hw)->intr_detect(hw); 1292 1293 return 0; 1294 } 1295 1296 static int 1297 virtio_intr_disable(struct rte_eth_dev *dev) 1298 { 1299 struct virtio_hw *hw = dev->data->dev_private; 1300 1301 if (rte_intr_disable(dev->intr_handle) < 0) 1302 return -1; 1303 1304 if (VIRTIO_OPS(hw)->intr_detect) 1305 VIRTIO_OPS(hw)->intr_detect(hw); 1306 1307 return 0; 1308 } 1309 1310 static int 1311 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1312 { 1313 uint64_t host_features; 1314 1315 /* Prepare guest_features: feature that driver wants to support */ 1316 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1317 req_features); 1318 1319 /* Read device(host) feature bits */ 1320 host_features = VIRTIO_OPS(hw)->get_features(hw); 1321 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1322 host_features); 1323 1324 /* If supported, ensure MTU value is valid before acknowledging it. */ 1325 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1326 struct virtio_net_config config; 1327 1328 virtio_read_dev_config(hw, 1329 offsetof(struct virtio_net_config, mtu), 1330 &config.mtu, sizeof(config.mtu)); 1331 1332 if (config.mtu < RTE_ETHER_MIN_MTU) 1333 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1334 } 1335 1336 /* 1337 * Negotiate features: Subset of device feature bits are written back 1338 * guest feature bits. 1339 */ 1340 hw->guest_features = req_features; 1341 hw->guest_features = virtio_negotiate_features(hw, host_features); 1342 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1343 hw->guest_features); 1344 1345 if (VIRTIO_OPS(hw)->features_ok(hw) < 0) 1346 return -1; 1347 1348 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) { 1349 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1350 1351 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1352 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!"); 1353 return -1; 1354 } 1355 } 1356 1357 hw->req_guest_features = req_features; 1358 1359 return 0; 1360 } 1361 1362 int 1363 virtio_dev_pause(struct rte_eth_dev *dev) 1364 { 1365 struct virtio_hw *hw = dev->data->dev_private; 1366 1367 rte_spinlock_lock(&hw->state_lock); 1368 1369 if (hw->started == 0) { 1370 /* Device is just stopped. */ 1371 rte_spinlock_unlock(&hw->state_lock); 1372 return -1; 1373 } 1374 hw->started = 0; 1375 /* 1376 * Prevent the worker threads from touching queues to avoid contention, 1377 * 1 ms should be enough for the ongoing Tx function to finish. 1378 */ 1379 rte_delay_ms(1); 1380 return 0; 1381 } 1382 1383 /* 1384 * Recover hw state to let the worker threads continue. 1385 */ 1386 void 1387 virtio_dev_resume(struct rte_eth_dev *dev) 1388 { 1389 struct virtio_hw *hw = dev->data->dev_private; 1390 1391 hw->started = 1; 1392 rte_spinlock_unlock(&hw->state_lock); 1393 } 1394 1395 /* 1396 * Should be called only after device is paused. 1397 */ 1398 int 1399 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1400 int nb_pkts) 1401 { 1402 struct virtio_hw *hw = dev->data->dev_private; 1403 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1404 int ret; 1405 1406 hw->inject_pkts = tx_pkts; 1407 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1408 hw->inject_pkts = NULL; 1409 1410 return ret; 1411 } 1412 1413 static void 1414 virtio_notify_peers(struct rte_eth_dev *dev) 1415 { 1416 struct virtio_hw *hw = dev->data->dev_private; 1417 struct virtnet_rx *rxvq; 1418 struct rte_mbuf *rarp_mbuf; 1419 1420 if (!dev->data->rx_queues) 1421 return; 1422 1423 rxvq = dev->data->rx_queues[0]; 1424 if (!rxvq) 1425 return; 1426 1427 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1428 (struct rte_ether_addr *)hw->mac_addr); 1429 if (rarp_mbuf == NULL) { 1430 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1431 return; 1432 } 1433 1434 /* If virtio port just stopped, no need to send RARP */ 1435 if (virtio_dev_pause(dev) < 0) { 1436 rte_pktmbuf_free(rarp_mbuf); 1437 return; 1438 } 1439 1440 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1441 virtio_dev_resume(dev); 1442 } 1443 1444 static void 1445 virtio_ack_link_announce(struct rte_eth_dev *dev) 1446 { 1447 struct virtio_hw *hw = dev->data->dev_private; 1448 struct virtio_pmd_ctrl ctrl; 1449 1450 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1451 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1452 1453 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1454 } 1455 1456 /* 1457 * Process virtio config changed interrupt. Call the callback 1458 * if link state changed, generate gratuitous RARP packet if 1459 * the status indicates an ANNOUNCE. 1460 */ 1461 void 1462 virtio_interrupt_handler(void *param) 1463 { 1464 struct rte_eth_dev *dev = param; 1465 struct virtio_hw *hw = dev->data->dev_private; 1466 uint8_t isr; 1467 uint16_t status; 1468 1469 /* Read interrupt status which clears interrupt */ 1470 isr = virtio_get_isr(hw); 1471 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1472 1473 if (virtio_intr_unmask(dev) < 0) 1474 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1475 1476 if (isr & VIRTIO_ISR_CONFIG) { 1477 if (virtio_dev_link_update(dev, 0) == 0) 1478 rte_eth_dev_callback_process(dev, 1479 RTE_ETH_EVENT_INTR_LSC, 1480 NULL); 1481 1482 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1483 virtio_read_dev_config(hw, 1484 offsetof(struct virtio_net_config, status), 1485 &status, sizeof(status)); 1486 if (status & VIRTIO_NET_S_ANNOUNCE) { 1487 virtio_notify_peers(dev); 1488 if (hw->cvq) 1489 virtio_ack_link_announce(dev); 1490 } 1491 } 1492 } 1493 } 1494 1495 /* set rx and tx handlers according to what is supported */ 1496 static void 1497 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1498 { 1499 struct virtio_hw *hw = eth_dev->data->dev_private; 1500 1501 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1502 if (virtio_with_packed_queue(hw)) { 1503 PMD_INIT_LOG(INFO, 1504 "virtio: using packed ring %s Tx path on port %u", 1505 hw->use_vec_tx ? "vectorized" : "standard", 1506 eth_dev->data->port_id); 1507 if (hw->use_vec_tx) 1508 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1509 else 1510 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1511 } else { 1512 if (hw->use_inorder_tx) { 1513 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1514 eth_dev->data->port_id); 1515 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1516 } else { 1517 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1518 eth_dev->data->port_id); 1519 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1520 } 1521 } 1522 1523 if (virtio_with_packed_queue(hw)) { 1524 if (hw->use_vec_rx) { 1525 PMD_INIT_LOG(INFO, 1526 "virtio: using packed ring vectorized Rx path on port %u", 1527 eth_dev->data->port_id); 1528 eth_dev->rx_pkt_burst = 1529 &virtio_recv_pkts_packed_vec; 1530 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1531 PMD_INIT_LOG(INFO, 1532 "virtio: using packed ring mergeable buffer Rx path on port %u", 1533 eth_dev->data->port_id); 1534 eth_dev->rx_pkt_burst = 1535 &virtio_recv_mergeable_pkts_packed; 1536 } else { 1537 PMD_INIT_LOG(INFO, 1538 "virtio: using packed ring standard Rx path on port %u", 1539 eth_dev->data->port_id); 1540 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1541 } 1542 } else { 1543 if (hw->use_vec_rx) { 1544 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1545 eth_dev->data->port_id); 1546 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1547 } else if (hw->use_inorder_rx) { 1548 PMD_INIT_LOG(INFO, 1549 "virtio: using inorder Rx path on port %u", 1550 eth_dev->data->port_id); 1551 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1552 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1553 PMD_INIT_LOG(INFO, 1554 "virtio: using mergeable buffer Rx path on port %u", 1555 eth_dev->data->port_id); 1556 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1557 } else { 1558 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1559 eth_dev->data->port_id); 1560 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1561 } 1562 } 1563 1564 } 1565 1566 /* Only support 1:1 queue/interrupt mapping so far. 1567 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1568 * interrupt vectors (<N+1). 1569 */ 1570 static int 1571 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1572 { 1573 uint32_t i; 1574 struct virtio_hw *hw = dev->data->dev_private; 1575 1576 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1577 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1578 dev->intr_handle->intr_vec[i] = i + 1; 1579 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1580 VIRTIO_MSI_NO_VECTOR) { 1581 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1582 return -EBUSY; 1583 } 1584 } 1585 1586 return 0; 1587 } 1588 1589 static void 1590 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1591 { 1592 uint32_t i; 1593 struct virtio_hw *hw = dev->data->dev_private; 1594 1595 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1596 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1597 VIRTIO_OPS(hw)->set_queue_irq(hw, 1598 hw->vqs[i * VTNET_CQ], 1599 VIRTIO_MSI_NO_VECTOR); 1600 } 1601 1602 static int 1603 virtio_configure_intr(struct rte_eth_dev *dev) 1604 { 1605 struct virtio_hw *hw = dev->data->dev_private; 1606 1607 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1608 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1609 return -ENOTSUP; 1610 } 1611 1612 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1613 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1614 return -1; 1615 } 1616 1617 if (!dev->intr_handle->intr_vec) { 1618 dev->intr_handle->intr_vec = 1619 rte_zmalloc("intr_vec", 1620 hw->max_queue_pairs * sizeof(int), 0); 1621 if (!dev->intr_handle->intr_vec) { 1622 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1623 hw->max_queue_pairs); 1624 return -ENOMEM; 1625 } 1626 } 1627 1628 /* Re-register callback to update max_intr */ 1629 rte_intr_callback_unregister(dev->intr_handle, 1630 virtio_interrupt_handler, 1631 dev); 1632 rte_intr_callback_register(dev->intr_handle, 1633 virtio_interrupt_handler, 1634 dev); 1635 1636 /* DO NOT try to remove this! This function will enable msix, or QEMU 1637 * will encounter SIGSEGV when DRIVER_OK is sent. 1638 * And for legacy devices, this should be done before queue/vec binding 1639 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1640 * (22) will be ignored. 1641 */ 1642 if (virtio_intr_enable(dev) < 0) { 1643 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1644 return -1; 1645 } 1646 1647 if (virtio_queues_bind_intr(dev) < 0) { 1648 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1649 return -1; 1650 } 1651 1652 return 0; 1653 } 1654 #define DUPLEX_UNKNOWN 0xff 1655 /* reset device and renegotiate features if needed */ 1656 static int 1657 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1658 { 1659 struct virtio_hw *hw = eth_dev->data->dev_private; 1660 struct virtio_net_config *config; 1661 struct virtio_net_config local_config; 1662 int ret; 1663 1664 /* Reset the device although not necessary at startup */ 1665 virtio_reset(hw); 1666 1667 if (hw->vqs) { 1668 virtio_dev_free_mbufs(eth_dev); 1669 virtio_free_queues(hw); 1670 } 1671 1672 /* Tell the host we've noticed this device. */ 1673 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1674 1675 /* Tell the host we've known how to drive the device. */ 1676 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1677 if (virtio_ethdev_negotiate_features(hw, req_features) < 0) 1678 return -1; 1679 1680 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1681 1682 /* If host does not support both status and MSI-X then disable LSC */ 1683 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc) 1684 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1685 else 1686 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1687 1688 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1689 1690 /* Setting up rx_header size for the device */ 1691 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1692 virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 1693 virtio_with_packed_queue(hw)) 1694 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1695 else 1696 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1697 1698 /* Copy the permanent MAC address to: virtio_hw */ 1699 virtio_get_hwaddr(hw); 1700 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1701 ð_dev->data->mac_addrs[0]); 1702 PMD_INIT_LOG(DEBUG, 1703 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1704 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1705 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1706 1707 if (hw->speed == ETH_SPEED_NUM_UNKNOWN) { 1708 if (virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) { 1709 config = &local_config; 1710 virtio_read_dev_config(hw, 1711 offsetof(struct virtio_net_config, speed), 1712 &config->speed, sizeof(config->speed)); 1713 virtio_read_dev_config(hw, 1714 offsetof(struct virtio_net_config, duplex), 1715 &config->duplex, sizeof(config->duplex)); 1716 hw->speed = config->speed; 1717 hw->duplex = config->duplex; 1718 } 1719 } 1720 if (hw->duplex == DUPLEX_UNKNOWN) 1721 hw->duplex = ETH_LINK_FULL_DUPLEX; 1722 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1723 hw->speed, hw->duplex); 1724 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1725 config = &local_config; 1726 1727 virtio_read_dev_config(hw, 1728 offsetof(struct virtio_net_config, mac), 1729 &config->mac, sizeof(config->mac)); 1730 1731 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1732 virtio_read_dev_config(hw, 1733 offsetof(struct virtio_net_config, status), 1734 &config->status, sizeof(config->status)); 1735 } else { 1736 PMD_INIT_LOG(DEBUG, 1737 "VIRTIO_NET_F_STATUS is not supported"); 1738 config->status = 0; 1739 } 1740 1741 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ)) { 1742 virtio_read_dev_config(hw, 1743 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1744 &config->max_virtqueue_pairs, 1745 sizeof(config->max_virtqueue_pairs)); 1746 } else { 1747 PMD_INIT_LOG(DEBUG, 1748 "VIRTIO_NET_F_MQ is not supported"); 1749 config->max_virtqueue_pairs = 1; 1750 } 1751 1752 hw->max_queue_pairs = config->max_virtqueue_pairs; 1753 1754 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) { 1755 virtio_read_dev_config(hw, 1756 offsetof(struct virtio_net_config, mtu), 1757 &config->mtu, 1758 sizeof(config->mtu)); 1759 1760 /* 1761 * MTU value has already been checked at negotiation 1762 * time, but check again in case it has changed since 1763 * then, which should not happen. 1764 */ 1765 if (config->mtu < RTE_ETHER_MIN_MTU) { 1766 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1767 config->mtu); 1768 return -1; 1769 } 1770 1771 hw->max_mtu = config->mtu; 1772 /* Set initial MTU to maximum one supported by vhost */ 1773 eth_dev->data->mtu = config->mtu; 1774 1775 } else { 1776 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1777 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1778 } 1779 1780 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1781 config->max_virtqueue_pairs); 1782 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1783 PMD_INIT_LOG(DEBUG, 1784 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1785 config->mac[0], config->mac[1], 1786 config->mac[2], config->mac[3], 1787 config->mac[4], config->mac[5]); 1788 } else { 1789 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1790 hw->max_queue_pairs = 1; 1791 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1792 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1793 } 1794 1795 ret = virtio_alloc_queues(eth_dev); 1796 if (ret < 0) 1797 return ret; 1798 1799 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1800 if (virtio_configure_intr(eth_dev) < 0) { 1801 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1802 virtio_free_queues(hw); 1803 return -1; 1804 } 1805 } 1806 1807 virtio_reinit_complete(hw); 1808 1809 return 0; 1810 } 1811 1812 /* 1813 * This function is based on probe() function in virtio_pci.c 1814 * It returns 0 on success. 1815 */ 1816 int 1817 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1818 { 1819 struct virtio_hw *hw = eth_dev->data->dev_private; 1820 uint32_t speed = ETH_SPEED_NUM_UNKNOWN; 1821 int vectorized = 0; 1822 int ret; 1823 1824 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1825 PMD_INIT_LOG(ERR, 1826 "Not sufficient headroom required = %d, avail = %d", 1827 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1828 RTE_PKTMBUF_HEADROOM); 1829 1830 return -1; 1831 } 1832 1833 eth_dev->dev_ops = &virtio_eth_dev_ops; 1834 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done; 1835 1836 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1837 set_rxtx_funcs(eth_dev); 1838 return 0; 1839 } 1840 1841 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized); 1842 if (ret < 0) 1843 return ret; 1844 hw->speed = speed; 1845 1846 /* Allocate memory for storing MAC addresses */ 1847 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1848 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1849 if (eth_dev->data->mac_addrs == NULL) { 1850 PMD_INIT_LOG(ERR, 1851 "Failed to allocate %d bytes needed to store MAC addresses", 1852 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1853 return -ENOMEM; 1854 } 1855 1856 rte_spinlock_init(&hw->state_lock); 1857 1858 /* reset device and negotiate default features */ 1859 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1860 if (ret < 0) 1861 goto err_virtio_init; 1862 1863 if (vectorized) { 1864 if (!virtio_with_packed_queue(hw)) { 1865 hw->use_vec_rx = 1; 1866 } else { 1867 #if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM) 1868 hw->use_vec_rx = 1; 1869 hw->use_vec_tx = 1; 1870 #else 1871 PMD_DRV_LOG(INFO, 1872 "building environment do not support packed ring vectorized"); 1873 #endif 1874 } 1875 } 1876 1877 hw->opened = 1; 1878 1879 return 0; 1880 1881 err_virtio_init: 1882 rte_free(eth_dev->data->mac_addrs); 1883 eth_dev->data->mac_addrs = NULL; 1884 return ret; 1885 } 1886 1887 static uint32_t 1888 virtio_dev_speed_capa_get(uint32_t speed) 1889 { 1890 switch (speed) { 1891 case ETH_SPEED_NUM_10G: 1892 return ETH_LINK_SPEED_10G; 1893 case ETH_SPEED_NUM_20G: 1894 return ETH_LINK_SPEED_20G; 1895 case ETH_SPEED_NUM_25G: 1896 return ETH_LINK_SPEED_25G; 1897 case ETH_SPEED_NUM_40G: 1898 return ETH_LINK_SPEED_40G; 1899 case ETH_SPEED_NUM_50G: 1900 return ETH_LINK_SPEED_50G; 1901 case ETH_SPEED_NUM_56G: 1902 return ETH_LINK_SPEED_56G; 1903 case ETH_SPEED_NUM_100G: 1904 return ETH_LINK_SPEED_100G; 1905 case ETH_SPEED_NUM_200G: 1906 return ETH_LINK_SPEED_200G; 1907 default: 1908 return 0; 1909 } 1910 } 1911 1912 static int vectorized_check_handler(__rte_unused const char *key, 1913 const char *value, void *ret_val) 1914 { 1915 if (strcmp(value, "1") == 0) 1916 *(int *)ret_val = 1; 1917 else 1918 *(int *)ret_val = 0; 1919 1920 return 0; 1921 } 1922 1923 #define VIRTIO_ARG_SPEED "speed" 1924 #define VIRTIO_ARG_VECTORIZED "vectorized" 1925 1926 static int 1927 link_speed_handler(const char *key __rte_unused, 1928 const char *value, void *ret_val) 1929 { 1930 uint32_t val; 1931 if (!value || !ret_val) 1932 return -EINVAL; 1933 val = strtoul(value, NULL, 0); 1934 /* validate input */ 1935 if (virtio_dev_speed_capa_get(val) == 0) 1936 return -EINVAL; 1937 *(uint32_t *)ret_val = val; 1938 1939 return 0; 1940 } 1941 1942 1943 static int 1944 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized) 1945 { 1946 struct rte_kvargs *kvlist; 1947 int ret = 0; 1948 1949 if (devargs == NULL) 1950 return 0; 1951 1952 kvlist = rte_kvargs_parse(devargs->args, NULL); 1953 if (kvlist == NULL) { 1954 PMD_INIT_LOG(ERR, "error when parsing param"); 1955 return 0; 1956 } 1957 1958 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 1959 ret = rte_kvargs_process(kvlist, 1960 VIRTIO_ARG_SPEED, 1961 link_speed_handler, speed); 1962 if (ret < 0) { 1963 PMD_INIT_LOG(ERR, "Failed to parse %s", 1964 VIRTIO_ARG_SPEED); 1965 goto exit; 1966 } 1967 } 1968 1969 if (vectorized && 1970 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 1971 ret = rte_kvargs_process(kvlist, 1972 VIRTIO_ARG_VECTORIZED, 1973 vectorized_check_handler, vectorized); 1974 if (ret < 0) { 1975 PMD_INIT_LOG(ERR, "Failed to parse %s", 1976 VIRTIO_ARG_VECTORIZED); 1977 goto exit; 1978 } 1979 } 1980 1981 exit: 1982 rte_kvargs_free(kvlist); 1983 return ret; 1984 } 1985 1986 static uint8_t 1987 rx_offload_enabled(struct virtio_hw *hw) 1988 { 1989 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 1990 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 1991 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 1992 } 1993 1994 static uint8_t 1995 tx_offload_enabled(struct virtio_hw *hw) 1996 { 1997 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) || 1998 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 1999 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2000 } 2001 2002 /* 2003 * Configure virtio device 2004 * It returns 0 on success. 2005 */ 2006 static int 2007 virtio_dev_configure(struct rte_eth_dev *dev) 2008 { 2009 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2010 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2011 struct virtio_hw *hw = dev->data->dev_private; 2012 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2013 hw->vtnet_hdr_size; 2014 uint64_t rx_offloads = rxmode->offloads; 2015 uint64_t tx_offloads = txmode->offloads; 2016 uint64_t req_features; 2017 int ret; 2018 2019 PMD_INIT_LOG(DEBUG, "configure"); 2020 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2021 2022 if (rxmode->mq_mode != ETH_MQ_RX_NONE) { 2023 PMD_DRV_LOG(ERR, 2024 "Unsupported Rx multi queue mode %d", 2025 rxmode->mq_mode); 2026 return -EINVAL; 2027 } 2028 2029 if (txmode->mq_mode != ETH_MQ_TX_NONE) { 2030 PMD_DRV_LOG(ERR, 2031 "Unsupported Tx multi queue mode %d", 2032 txmode->mq_mode); 2033 return -EINVAL; 2034 } 2035 2036 if (dev->data->dev_conf.intr_conf.rxq) { 2037 ret = virtio_init_device(dev, hw->req_guest_features); 2038 if (ret < 0) 2039 return ret; 2040 } 2041 2042 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2043 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2044 2045 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2046 DEV_RX_OFFLOAD_TCP_CKSUM)) 2047 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2048 2049 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2050 req_features |= 2051 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2052 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2053 2054 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2055 DEV_TX_OFFLOAD_TCP_CKSUM)) 2056 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2057 2058 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2059 req_features |= 2060 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2061 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2062 2063 /* if request features changed, reinit the device */ 2064 if (req_features != hw->req_guest_features) { 2065 ret = virtio_init_device(dev, req_features); 2066 if (ret < 0) 2067 return ret; 2068 } 2069 2070 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2071 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2072 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2073 PMD_DRV_LOG(ERR, 2074 "rx checksum not available on this host"); 2075 return -ENOTSUP; 2076 } 2077 2078 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2079 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2080 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2081 PMD_DRV_LOG(ERR, 2082 "Large Receive Offload not available on this host"); 2083 return -ENOTSUP; 2084 } 2085 2086 /* start control queue */ 2087 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2088 virtio_dev_cq_start(dev); 2089 2090 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2091 hw->vlan_strip = 1; 2092 2093 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2094 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2095 PMD_DRV_LOG(ERR, 2096 "vlan filtering not available on this host"); 2097 return -ENOTSUP; 2098 } 2099 2100 hw->has_tx_offload = tx_offload_enabled(hw); 2101 hw->has_rx_offload = rx_offload_enabled(hw); 2102 2103 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2104 /* Enable vector (0) for Link State Intrerrupt */ 2105 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) == 2106 VIRTIO_MSI_NO_VECTOR) { 2107 PMD_DRV_LOG(ERR, "failed to set config vector"); 2108 return -EBUSY; 2109 } 2110 2111 if (virtio_with_packed_queue(hw)) { 2112 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2113 if ((hw->use_vec_rx || hw->use_vec_tx) && 2114 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2115 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2116 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2117 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) { 2118 PMD_DRV_LOG(INFO, 2119 "disabled packed ring vectorized path for requirements not met"); 2120 hw->use_vec_rx = 0; 2121 hw->use_vec_tx = 0; 2122 } 2123 #elif defined(RTE_ARCH_ARM) 2124 if ((hw->use_vec_rx || hw->use_vec_tx) && 2125 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) || 2126 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2127 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2128 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) { 2129 PMD_DRV_LOG(INFO, 2130 "disabled packed ring vectorized path for requirements not met"); 2131 hw->use_vec_rx = 0; 2132 hw->use_vec_tx = 0; 2133 } 2134 #else 2135 hw->use_vec_rx = 0; 2136 hw->use_vec_tx = 0; 2137 #endif 2138 2139 if (hw->use_vec_rx) { 2140 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2141 PMD_DRV_LOG(INFO, 2142 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2143 hw->use_vec_rx = 0; 2144 } 2145 2146 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) { 2147 PMD_DRV_LOG(INFO, 2148 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2149 hw->use_vec_rx = 0; 2150 } 2151 } 2152 } else { 2153 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2154 hw->use_inorder_tx = 1; 2155 hw->use_inorder_rx = 1; 2156 hw->use_vec_rx = 0; 2157 } 2158 2159 if (hw->use_vec_rx) { 2160 #if defined RTE_ARCH_ARM 2161 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2162 PMD_DRV_LOG(INFO, 2163 "disabled split ring vectorized path for requirement not met"); 2164 hw->use_vec_rx = 0; 2165 } 2166 #endif 2167 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2168 PMD_DRV_LOG(INFO, 2169 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2170 hw->use_vec_rx = 0; 2171 } 2172 2173 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2174 DEV_RX_OFFLOAD_TCP_CKSUM | 2175 DEV_RX_OFFLOAD_TCP_LRO | 2176 DEV_RX_OFFLOAD_VLAN_STRIP)) { 2177 PMD_DRV_LOG(INFO, 2178 "disabled split ring vectorized rx for offloading enabled"); 2179 hw->use_vec_rx = 0; 2180 } 2181 2182 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) { 2183 PMD_DRV_LOG(INFO, 2184 "disabled split ring vectorized rx, max SIMD bitwidth too low"); 2185 hw->use_vec_rx = 0; 2186 } 2187 } 2188 } 2189 2190 return 0; 2191 } 2192 2193 2194 static int 2195 virtio_dev_start(struct rte_eth_dev *dev) 2196 { 2197 uint16_t nb_queues, i; 2198 struct virtqueue *vq; 2199 struct virtio_hw *hw = dev->data->dev_private; 2200 int ret; 2201 2202 /* Finish the initialization of the queues */ 2203 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2204 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2205 if (ret < 0) 2206 return ret; 2207 } 2208 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2209 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2210 if (ret < 0) 2211 return ret; 2212 } 2213 2214 /* check if lsc interrupt feature is enabled */ 2215 if (dev->data->dev_conf.intr_conf.lsc) { 2216 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2217 PMD_DRV_LOG(ERR, "link status not supported by host"); 2218 return -ENOTSUP; 2219 } 2220 } 2221 2222 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2223 * in device configure, but it could be unmapped when device is 2224 * stopped. 2225 */ 2226 if (dev->data->dev_conf.intr_conf.lsc || 2227 dev->data->dev_conf.intr_conf.rxq) { 2228 virtio_intr_disable(dev); 2229 2230 /* Setup interrupt callback */ 2231 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2232 rte_intr_callback_register(dev->intr_handle, 2233 virtio_interrupt_handler, 2234 dev); 2235 2236 if (virtio_intr_enable(dev) < 0) { 2237 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2238 return -EIO; 2239 } 2240 } 2241 2242 /*Notify the backend 2243 *Otherwise the tap backend might already stop its queue due to fullness. 2244 *vhost backend will have no chance to be waked up 2245 */ 2246 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2247 if (hw->max_queue_pairs > 1) { 2248 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2249 return -EINVAL; 2250 } 2251 2252 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2253 2254 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2255 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2256 /* Flush the old packets */ 2257 virtqueue_rxvq_flush(vq); 2258 virtqueue_notify(vq); 2259 } 2260 2261 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2262 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2263 virtqueue_notify(vq); 2264 } 2265 2266 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2267 2268 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2269 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2270 VIRTQUEUE_DUMP(vq); 2271 } 2272 2273 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2274 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2275 VIRTQUEUE_DUMP(vq); 2276 } 2277 2278 set_rxtx_funcs(dev); 2279 hw->started = 1; 2280 2281 /* Initialize Link state */ 2282 virtio_dev_link_update(dev, 0); 2283 2284 return 0; 2285 } 2286 2287 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2288 { 2289 struct virtio_hw *hw = dev->data->dev_private; 2290 uint16_t nr_vq = virtio_get_nr_vq(hw); 2291 const char *type __rte_unused; 2292 unsigned int i, mbuf_num = 0; 2293 struct virtqueue *vq; 2294 struct rte_mbuf *buf; 2295 int queue_type; 2296 2297 if (hw->vqs == NULL) 2298 return; 2299 2300 for (i = 0; i < nr_vq; i++) { 2301 vq = hw->vqs[i]; 2302 if (!vq) 2303 continue; 2304 2305 queue_type = virtio_get_queue_type(hw, i); 2306 if (queue_type == VTNET_RQ) 2307 type = "rxq"; 2308 else if (queue_type == VTNET_TQ) 2309 type = "txq"; 2310 else 2311 continue; 2312 2313 PMD_INIT_LOG(DEBUG, 2314 "Before freeing %s[%d] used and unused buf", 2315 type, i); 2316 VIRTQUEUE_DUMP(vq); 2317 2318 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2319 rte_pktmbuf_free(buf); 2320 mbuf_num++; 2321 } 2322 2323 PMD_INIT_LOG(DEBUG, 2324 "After freeing %s[%d] used and unused buf", 2325 type, i); 2326 VIRTQUEUE_DUMP(vq); 2327 } 2328 2329 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2330 } 2331 2332 /* 2333 * Stop device: disable interrupt and mark link down 2334 */ 2335 int 2336 virtio_dev_stop(struct rte_eth_dev *dev) 2337 { 2338 struct virtio_hw *hw = dev->data->dev_private; 2339 struct rte_eth_link link; 2340 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2341 2342 PMD_INIT_LOG(DEBUG, "stop"); 2343 dev->data->dev_started = 0; 2344 2345 rte_spinlock_lock(&hw->state_lock); 2346 if (!hw->started) 2347 goto out_unlock; 2348 hw->started = 0; 2349 2350 if (intr_conf->lsc || intr_conf->rxq) { 2351 virtio_intr_disable(dev); 2352 2353 /* Reset interrupt callback */ 2354 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2355 rte_intr_callback_unregister(dev->intr_handle, 2356 virtio_interrupt_handler, 2357 dev); 2358 } 2359 } 2360 2361 memset(&link, 0, sizeof(link)); 2362 rte_eth_linkstatus_set(dev, &link); 2363 out_unlock: 2364 rte_spinlock_unlock(&hw->state_lock); 2365 2366 return 0; 2367 } 2368 2369 static int 2370 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2371 { 2372 struct rte_eth_link link; 2373 uint16_t status; 2374 struct virtio_hw *hw = dev->data->dev_private; 2375 2376 memset(&link, 0, sizeof(link)); 2377 link.link_duplex = hw->duplex; 2378 link.link_speed = hw->speed; 2379 link.link_autoneg = ETH_LINK_AUTONEG; 2380 2381 if (!hw->started) { 2382 link.link_status = ETH_LINK_DOWN; 2383 link.link_speed = ETH_SPEED_NUM_NONE; 2384 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2385 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2386 virtio_read_dev_config(hw, 2387 offsetof(struct virtio_net_config, status), 2388 &status, sizeof(status)); 2389 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2390 link.link_status = ETH_LINK_DOWN; 2391 link.link_speed = ETH_SPEED_NUM_NONE; 2392 PMD_INIT_LOG(DEBUG, "Port %d is down", 2393 dev->data->port_id); 2394 } else { 2395 link.link_status = ETH_LINK_UP; 2396 PMD_INIT_LOG(DEBUG, "Port %d is up", 2397 dev->data->port_id); 2398 } 2399 } else { 2400 link.link_status = ETH_LINK_UP; 2401 } 2402 2403 return rte_eth_linkstatus_set(dev, &link); 2404 } 2405 2406 static int 2407 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2408 { 2409 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2410 struct virtio_hw *hw = dev->data->dev_private; 2411 uint64_t offloads = rxmode->offloads; 2412 2413 if (mask & ETH_VLAN_FILTER_MASK) { 2414 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2415 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2416 2417 PMD_DRV_LOG(NOTICE, 2418 "vlan filtering not available on this host"); 2419 2420 return -ENOTSUP; 2421 } 2422 } 2423 2424 if (mask & ETH_VLAN_STRIP_MASK) 2425 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2426 2427 return 0; 2428 } 2429 2430 static int 2431 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2432 { 2433 uint64_t tso_mask, host_features; 2434 struct virtio_hw *hw = dev->data->dev_private; 2435 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2436 2437 dev_info->max_rx_queues = 2438 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2439 dev_info->max_tx_queues = 2440 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2441 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2442 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2443 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2444 2445 host_features = VIRTIO_OPS(hw)->get_features(hw); 2446 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2447 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2448 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2449 dev_info->rx_offload_capa |= 2450 DEV_RX_OFFLOAD_TCP_CKSUM | 2451 DEV_RX_OFFLOAD_UDP_CKSUM; 2452 } 2453 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2454 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2455 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2456 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2457 if ((host_features & tso_mask) == tso_mask) 2458 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2459 2460 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2461 DEV_TX_OFFLOAD_VLAN_INSERT; 2462 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2463 dev_info->tx_offload_capa |= 2464 DEV_TX_OFFLOAD_UDP_CKSUM | 2465 DEV_TX_OFFLOAD_TCP_CKSUM; 2466 } 2467 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2468 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2469 if ((host_features & tso_mask) == tso_mask) 2470 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2471 2472 return 0; 2473 } 2474 2475 /* 2476 * It enables testpmd to collect per queue stats. 2477 */ 2478 static int 2479 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2480 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2481 __rte_unused uint8_t is_rx) 2482 { 2483 return 0; 2484 } 2485 2486 RTE_LOG_REGISTER(virtio_logtype_init, pmd.net.virtio.init, NOTICE); 2487 RTE_LOG_REGISTER(virtio_logtype_driver, pmd.net.virtio.driver, NOTICE); 2488