drivers/net/virtio/virtio_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdint.h>
  35 #include <string.h>
  36 #include <stdio.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39
  40 #include <rte_ethdev.h>
  41 #include <rte_memcpy.h>
  42 #include <rte_string_fns.h>
  43 #include <rte_memzone.h>
  44 #include <rte_malloc.h>
  45 #include <rte_atomic.h>
  46 #include <rte_branch_prediction.h>
  47 #include <rte_pci.h>
  48 #include <rte_ether.h>
  49 #include <rte_common.h>
  50 #include <rte_errno.h>
  51
  52 #include <rte_memory.h>
  53 #include <rte_eal.h>
  54 #include <rte_dev.h>
  55
  56 #include "virtio_ethdev.h"
  57 #include "virtio_pci.h"
  58 #include "virtio_logs.h"
  59 #include "virtqueue.h"
  60 #include "virtio_rxtx.h"
  61
  62 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
  63 static int  virtio_dev_configure(struct rte_eth_dev *dev);
  64 static int  virtio_dev_start(struct rte_eth_dev *dev);
  65 static void virtio_dev_stop(struct rte_eth_dev *dev);
  66 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
  67 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
  68 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
  69 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
  70 static void virtio_dev_info_get(struct rte_eth_dev *dev,
  71                                 struct rte_eth_dev_info *dev_info);
  72 static int virtio_dev_link_update(struct rte_eth_dev *dev,
  73         __rte_unused int wait_to_complete);
  74
  75 static void virtio_set_hwaddr(struct virtio_hw *hw);
  76 static void virtio_get_hwaddr(struct virtio_hw *hw);
  77
  78 static void virtio_dev_stats_get(struct rte_eth_dev *dev,
  79                                  struct rte_eth_stats *stats);
  80 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
  81                                  struct rte_eth_xstat *xstats, unsigned n);
  82 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
  83                                        struct rte_eth_xstat_name *xstats_names,
  84                                        unsigned limit);
  85 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
  86 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
  87 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
  88                                 uint16_t vlan_id, int on);
  89 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
  90                                 struct ether_addr *mac_addr,
  91                                 uint32_t index, uint32_t vmdq __rte_unused);
  92 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
  93 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
  94                                 struct ether_addr *mac_addr);
  95
  96 static int virtio_dev_queue_stats_mapping_set(
  97         __rte_unused struct rte_eth_dev *eth_dev,
  98         __rte_unused uint16_t queue_id,
  99         __rte_unused uint8_t stat_idx,
 100         __rte_unused uint8_t is_rx);
 101
 102 /*
 103  * The set of PCI devices this driver supports
 104  */
 105 static const struct rte_pci_id pci_id_virtio_map[] = {
 106         { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
 107         { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
 108         { .vendor_id = 0, /* sentinel */ },
 109 };
 110
 111 struct rte_virtio_xstats_name_off {
 112         char name[RTE_ETH_XSTATS_NAME_SIZE];
 113         unsigned offset;
 114 };
 115
 116 /* [rt]x_qX_ is prepended to the name string here */
 117 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
 118         {"good_packets",           offsetof(struct virtnet_rx, stats.packets)},
 119         {"good_bytes",             offsetof(struct virtnet_rx, stats.bytes)},
 120         {"errors",                 offsetof(struct virtnet_rx, stats.errors)},
 121         {"multicast_packets",      offsetof(struct virtnet_rx, stats.multicast)},
 122         {"broadcast_packets",      offsetof(struct virtnet_rx, stats.broadcast)},
 123         {"undersize_packets",      offsetof(struct virtnet_rx, stats.size_bins[0])},
 124         {"size_64_packets",        offsetof(struct virtnet_rx, stats.size_bins[1])},
 125         {"size_65_127_packets",    offsetof(struct virtnet_rx, stats.size_bins[2])},
 126         {"size_128_255_packets",   offsetof(struct virtnet_rx, stats.size_bins[3])},
 127         {"size_256_511_packets",   offsetof(struct virtnet_rx, stats.size_bins[4])},
 128         {"size_512_1023_packets",  offsetof(struct virtnet_rx, stats.size_bins[5])},
 129         {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
 130         {"size_1519_max_packets",  offsetof(struct virtnet_rx, stats.size_bins[7])},
 131 };
 132
 133 /* [rt]x_qX_ is prepended to the name string here */
 134 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
 135         {"good_packets",           offsetof(struct virtnet_tx, stats.packets)},
 136         {"good_bytes",             offsetof(struct virtnet_tx, stats.bytes)},
 137         {"errors",                 offsetof(struct virtnet_tx, stats.errors)},
 138         {"multicast_packets",      offsetof(struct virtnet_tx, stats.multicast)},
 139         {"broadcast_packets",      offsetof(struct virtnet_tx, stats.broadcast)},
 140         {"undersize_packets",      offsetof(struct virtnet_tx, stats.size_bins[0])},
 141         {"size_64_packets",        offsetof(struct virtnet_tx, stats.size_bins[1])},
 142         {"size_65_127_packets",    offsetof(struct virtnet_tx, stats.size_bins[2])},
 143         {"size_128_255_packets",   offsetof(struct virtnet_tx, stats.size_bins[3])},
 144         {"size_256_511_packets",   offsetof(struct virtnet_tx, stats.size_bins[4])},
 145         {"size_512_1023_packets",  offsetof(struct virtnet_tx, stats.size_bins[5])},
 146         {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
 147         {"size_1519_max_packets",  offsetof(struct virtnet_tx, stats.size_bins[7])},
 148 };
 149
 150 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
 151                             sizeof(rte_virtio_rxq_stat_strings[0]))
 152 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
 153                             sizeof(rte_virtio_txq_stat_strings[0]))
 154
 155 static int
 156 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
 157                 int *dlen, int pkt_num)
 158 {
 159         uint32_t head, i;
 160         int k, sum = 0;
 161         virtio_net_ctrl_ack status = ~0;
 162         struct virtio_pmd_ctrl result;
 163         struct virtqueue *vq;
 164
 165         ctrl->status = status;
 166
 167         if (!cvq || !cvq->vq) {
 168                 PMD_INIT_LOG(ERR, "Control queue is not supported.");
 169                 return -1;
 170         }
 171         vq = cvq->vq;
 172         head = vq->vq_desc_head_idx;
 173
 174         PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
 175                 "vq->hw->cvq = %p vq = %p",
 176                 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
 177
 178         if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
 179                 return -1;
 180
 181         memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
 182                 sizeof(struct virtio_pmd_ctrl));
 183
 184         /*
 185          * Format is enforced in qemu code:
 186          * One TX packet for header;
 187          * At least one TX packet per argument;
 188          * One RX packet for ACK.
 189          */
 190         vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
 191         vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
 192         vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
 193         vq->vq_free_cnt--;
 194         i = vq->vq_ring.desc[head].next;
 195
 196         for (k = 0; k < pkt_num; k++) {
 197                 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
 198                 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
 199                         + sizeof(struct virtio_net_ctrl_hdr)
 200                         + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
 201                 vq->vq_ring.desc[i].len = dlen[k];
 202                 sum += dlen[k];
 203                 vq->vq_free_cnt--;
 204                 i = vq->vq_ring.desc[i].next;
 205         }
 206
 207         vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
 208         vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
 209                         + sizeof(struct virtio_net_ctrl_hdr);
 210         vq->vq_ring.desc[i].len = sizeof(ctrl->status);
 211         vq->vq_free_cnt--;
 212
 213         vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
 214
 215         vq_update_avail_ring(vq, head);
 216         vq_update_avail_idx(vq);
 217
 218         PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
 219
 220         virtqueue_notify(vq);
 221
 222         rte_rmb();
 223         while (VIRTQUEUE_NUSED(vq) == 0) {
 224                 rte_rmb();
 225                 usleep(100);
 226         }
 227
 228         while (VIRTQUEUE_NUSED(vq)) {
 229                 uint32_t idx, desc_idx, used_idx;
 230                 struct vring_used_elem *uep;
 231
 232                 used_idx = (uint32_t)(vq->vq_used_cons_idx
 233                                 & (vq->vq_nentries - 1));
 234                 uep = &vq->vq_ring.used->ring[used_idx];
 235                 idx = (uint32_t) uep->id;
 236                 desc_idx = idx;
 237
 238                 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
 239                         desc_idx = vq->vq_ring.desc[desc_idx].next;
 240                         vq->vq_free_cnt++;
 241                 }
 242
 243                 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
 244                 vq->vq_desc_head_idx = idx;
 245
 246                 vq->vq_used_cons_idx++;
 247                 vq->vq_free_cnt++;
 248         }
 249
 250         PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
 251                         vq->vq_free_cnt, vq->vq_desc_head_idx);
 252
 253         memcpy(&result, cvq->virtio_net_hdr_mz->addr,
 254                         sizeof(struct virtio_pmd_ctrl));
 255
 256         return result.status;
 257 }
 258
 259 static int
 260 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
 261 {
 262         struct virtio_hw *hw = dev->data->dev_private;
 263         struct virtio_pmd_ctrl ctrl;
 264         int dlen[1];
 265         int ret;
 266
 267         ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
 268         ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
 269         memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
 270
 271         dlen[0] = sizeof(uint16_t);
 272
 273         ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
 274         if (ret) {
 275                 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
 276                           "failed, this is too late now...");
 277                 return -EINVAL;
 278         }
 279
 280         return 0;
 281 }
 282
 283 static void
 284 virtio_dev_queue_release(void *queue __rte_unused)
 285 {
 286         /* do nothing */
 287 }
 288
 289 static int
 290 virtio_get_queue_type(struct virtio_hw *hw, uint16_t vtpci_queue_idx)
 291 {
 292         if (vtpci_queue_idx == hw->max_queue_pairs * 2)
 293                 return VTNET_CQ;
 294         else if (vtpci_queue_idx % 2 == 0)
 295                 return VTNET_RQ;
 296         else
 297                 return VTNET_TQ;
 298 }
 299
 300 static uint16_t
 301 virtio_get_nr_vq(struct virtio_hw *hw)
 302 {
 303         uint16_t nr_vq = hw->max_queue_pairs * 2;
 304
 305         if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
 306                 nr_vq += 1;
 307
 308         return nr_vq;
 309 }
 310
 311 static void
 312 virtio_init_vring(struct virtqueue *vq)
 313 {
 314         int size = vq->vq_nentries;
 315         struct vring *vr = &vq->vq_ring;
 316         uint8_t *ring_mem = vq->vq_ring_virt_mem;
 317
 318         PMD_INIT_FUNC_TRACE();
 319
 320         /*
 321          * Reinitialise since virtio port might have been stopped and restarted
 322          */
 323         memset(ring_mem, 0, vq->vq_ring_size);
 324         vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN);
 325         vq->vq_used_cons_idx = 0;
 326         vq->vq_desc_head_idx = 0;
 327         vq->vq_avail_idx = 0;
 328         vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
 329         vq->vq_free_cnt = vq->vq_nentries;
 330         memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
 331
 332         vring_desc_init(vr->desc, size);
 333
 334         /*
 335          * Disable device(host) interrupting guest
 336          */
 337         virtqueue_disable_intr(vq);
 338 }
 339
 340 static int
 341 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
 342 {
 343         char vq_name[VIRTQUEUE_MAX_NAME_SZ];
 344         char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
 345         const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
 346         unsigned int vq_size, size;
 347         struct virtio_hw *hw = dev->data->dev_private;
 348         struct virtnet_rx *rxvq = NULL;
 349         struct virtnet_tx *txvq = NULL;
 350         struct virtnet_ctl *cvq = NULL;
 351         struct virtqueue *vq;
 352         size_t sz_hdr_mz = 0;
 353         void *sw_ring = NULL;
 354         int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
 355         int ret;
 356
 357         PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
 358
 359         /*
 360          * Read the virtqueue size from the Queue Size field
 361          * Always power of 2 and if 0 virtqueue does not exist
 362          */
 363         vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
 364         PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
 365         if (vq_size == 0) {
 366                 PMD_INIT_LOG(ERR, "virtqueue does not exist");
 367                 return -EINVAL;
 368         }
 369
 370         if (!rte_is_power_of_2(vq_size)) {
 371                 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
 372                 return -EINVAL;
 373         }
 374
 375         snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
 376                  dev->data->port_id, vtpci_queue_idx);
 377
 378         size = RTE_ALIGN_CEIL(sizeof(*vq) +
 379                                 vq_size * sizeof(struct vq_desc_extra),
 380                                 RTE_CACHE_LINE_SIZE);
 381         if (queue_type == VTNET_TQ) {
 382                 /*
 383                  * For each xmit packet, allocate a virtio_net_hdr
 384                  * and indirect ring elements
 385                  */
 386                 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
 387         } else if (queue_type == VTNET_CQ) {
 388                 /* Allocate a page for control vq command, data and status */
 389                 sz_hdr_mz = PAGE_SIZE;
 390         }
 391
 392         vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
 393                                 SOCKET_ID_ANY);
 394         if (vq == NULL) {
 395                 PMD_INIT_LOG(ERR, "can not allocate vq");
 396                 return -ENOMEM;
 397         }
 398         hw->vqs[vtpci_queue_idx] = vq;
 399
 400         vq->hw = hw;
 401         vq->vq_queue_index = vtpci_queue_idx;
 402         vq->vq_nentries = vq_size;
 403
 404         /*
 405          * Reserve a memzone for vring elements
 406          */
 407         size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
 408         vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
 409         PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
 410                      size, vq->vq_ring_size);
 411
 412         mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
 413                                          SOCKET_ID_ANY,
 414                                          0, VIRTIO_PCI_VRING_ALIGN);
 415         if (mz == NULL) {
 416                 if (rte_errno == EEXIST)
 417                         mz = rte_memzone_lookup(vq_name);
 418                 if (mz == NULL) {
 419                         ret = -ENOMEM;
 420                         goto fail_q_alloc;
 421                 }
 422         }
 423
 424         memset(mz->addr, 0, sizeof(mz->len));
 425
 426         vq->vq_ring_mem = mz->phys_addr;
 427         vq->vq_ring_virt_mem = mz->addr;
 428         PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem:      0x%" PRIx64,
 429                      (uint64_t)mz->phys_addr);
 430         PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
 431                      (uint64_t)(uintptr_t)mz->addr);
 432
 433         virtio_init_vring(vq);
 434
 435         if (sz_hdr_mz) {
 436                 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
 437                          dev->data->port_id, vtpci_queue_idx);
 438                 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
 439                                                      SOCKET_ID_ANY, 0,
 440                                                      RTE_CACHE_LINE_SIZE);
 441                 if (hdr_mz == NULL) {
 442                         if (rte_errno == EEXIST)
 443                                 hdr_mz = rte_memzone_lookup(vq_hdr_name);
 444                         if (hdr_mz == NULL) {
 445                                 ret = -ENOMEM;
 446                                 goto fail_q_alloc;
 447                         }
 448                 }
 449         }
 450
 451         if (queue_type == VTNET_RQ) {
 452                 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
 453                                sizeof(vq->sw_ring[0]);
 454
 455                 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
 456                                 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
 457                 if (!sw_ring) {
 458                         PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
 459                         ret = -ENOMEM;
 460                         goto fail_q_alloc;
 461                 }
 462
 463                 vq->sw_ring = sw_ring;
 464                 rxvq = &vq->rxq;
 465                 rxvq->vq = vq;
 466                 rxvq->port_id = dev->data->port_id;
 467                 rxvq->mz = mz;
 468         } else if (queue_type == VTNET_TQ) {
 469                 txvq = &vq->txq;
 470                 txvq->vq = vq;
 471                 txvq->port_id = dev->data->port_id;
 472                 txvq->mz = mz;
 473                 txvq->virtio_net_hdr_mz = hdr_mz;
 474                 txvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
 475         } else if (queue_type == VTNET_CQ) {
 476                 cvq = &vq->cq;
 477                 cvq->vq = vq;
 478                 cvq->mz = mz;
 479                 cvq->virtio_net_hdr_mz = hdr_mz;
 480                 cvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
 481                 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
 482
 483                 hw->cvq = cvq;
 484         }
 485
 486         /* For virtio_user case (that is when hw->dev is NULL), we use
 487          * virtual address. And we need properly set _offset_, please see
 488          * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
 489          */
 490         if (hw->dev)
 491                 vq->offset = offsetof(struct rte_mbuf, buf_physaddr);
 492         else {
 493                 vq->vq_ring_mem = (uintptr_t)mz->addr;
 494                 vq->offset = offsetof(struct rte_mbuf, buf_addr);
 495                 if (queue_type == VTNET_TQ)
 496                         txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
 497                 else if (queue_type == VTNET_CQ)
 498                         cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
 499         }
 500
 501         if (queue_type == VTNET_TQ) {
 502                 struct virtio_tx_region *txr;
 503                 unsigned int i;
 504
 505                 txr = hdr_mz->addr;
 506                 memset(txr, 0, vq_size * sizeof(*txr));
 507                 for (i = 0; i < vq_size; i++) {
 508                         struct vring_desc *start_dp = txr[i].tx_indir;
 509
 510                         vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
 511
 512                         /* first indirect descriptor is always the tx header */
 513                         start_dp->addr = txvq->virtio_net_hdr_mem
 514                                 + i * sizeof(*txr)
 515                                 + offsetof(struct virtio_tx_region, tx_hdr);
 516
 517                         start_dp->len = hw->vtnet_hdr_size;
 518                         start_dp->flags = VRING_DESC_F_NEXT;
 519                 }
 520         }
 521
 522         if (hw->vtpci_ops->setup_queue(hw, vq) < 0) {
 523                 PMD_INIT_LOG(ERR, "setup_queue failed");
 524                 return -EINVAL;
 525         }
 526
 527         return 0;
 528
 529 fail_q_alloc:
 530         rte_free(sw_ring);
 531         rte_memzone_free(hdr_mz);
 532         rte_memzone_free(mz);
 533         rte_free(vq);
 534
 535         return ret;
 536 }
 537
 538 static void
 539 virtio_free_queues(struct virtio_hw *hw)
 540 {
 541         uint16_t nr_vq = virtio_get_nr_vq(hw);
 542         struct virtqueue *vq;
 543         int queue_type;
 544         uint16_t i;
 545
 546         for (i = 0; i < nr_vq; i++) {
 547                 vq = hw->vqs[i];
 548                 if (!vq)
 549                         continue;
 550
 551                 queue_type = virtio_get_queue_type(hw, i);
 552                 if (queue_type == VTNET_RQ) {
 553                         rte_free(vq->sw_ring);
 554                         rte_memzone_free(vq->rxq.mz);
 555                 } else if (queue_type == VTNET_TQ) {
 556                         rte_memzone_free(vq->txq.mz);
 557                         rte_memzone_free(vq->txq.virtio_net_hdr_mz);
 558                 } else {
 559                         rte_memzone_free(vq->cq.mz);
 560                         rte_memzone_free(vq->cq.virtio_net_hdr_mz);
 561                 }
 562
 563                 rte_free(vq);
 564         }
 565
 566         rte_free(hw->vqs);
 567 }
 568
 569 static int
 570 virtio_alloc_queues(struct rte_eth_dev *dev)
 571 {
 572         struct virtio_hw *hw = dev->data->dev_private;
 573         uint16_t nr_vq = virtio_get_nr_vq(hw);
 574         uint16_t i;
 575         int ret;
 576
 577         hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
 578         if (!hw->vqs) {
 579                 PMD_INIT_LOG(ERR, "failed to allocate vqs");
 580                 return -ENOMEM;
 581         }
 582
 583         for (i = 0; i < nr_vq; i++) {
 584                 ret = virtio_init_queue(dev, i);
 585                 if (ret < 0) {
 586                         virtio_free_queues(hw);
 587                         return ret;
 588                 }
 589         }
 590
 591         return 0;
 592 }
 593
 594 static void
 595 virtio_dev_close(struct rte_eth_dev *dev)
 596 {
 597         struct virtio_hw *hw = dev->data->dev_private;
 598
 599         PMD_INIT_LOG(DEBUG, "virtio_dev_close");
 600
 601         /* reset the NIC */
 602         if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
 603                 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
 604         vtpci_reset(hw);
 605         virtio_dev_free_mbufs(dev);
 606         virtio_free_queues(hw);
 607 }
 608
 609 static void
 610 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
 611 {
 612         struct virtio_hw *hw = dev->data->dev_private;
 613         struct virtio_pmd_ctrl ctrl;
 614         int dlen[1];
 615         int ret;
 616
 617         if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
 618                 PMD_INIT_LOG(INFO, "host does not support rx control\n");
 619                 return;
 620         }
 621
 622         ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
 623         ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
 624         ctrl.data[0] = 1;
 625         dlen[0] = 1;
 626
 627         ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
 628         if (ret)
 629                 PMD_INIT_LOG(ERR, "Failed to enable promisc");
 630 }
 631
 632 static void
 633 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
 634 {
 635         struct virtio_hw *hw = dev->data->dev_private;
 636         struct virtio_pmd_ctrl ctrl;
 637         int dlen[1];
 638         int ret;
 639
 640         if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
 641                 PMD_INIT_LOG(INFO, "host does not support rx control\n");
 642                 return;
 643         }
 644
 645         ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
 646         ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
 647         ctrl.data[0] = 0;
 648         dlen[0] = 1;
 649
 650         ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
 651         if (ret)
 652                 PMD_INIT_LOG(ERR, "Failed to disable promisc");
 653 }
 654
 655 static void
 656 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
 657 {
 658         struct virtio_hw *hw = dev->data->dev_private;
 659         struct virtio_pmd_ctrl ctrl;
 660         int dlen[1];
 661         int ret;
 662
 663         if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
 664                 PMD_INIT_LOG(INFO, "host does not support rx control\n");
 665                 return;
 666         }
 667
 668         ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
 669         ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
 670         ctrl.data[0] = 1;
 671         dlen[0] = 1;
 672
 673         ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
 674         if (ret)
 675                 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
 676 }
 677
 678 static void
 679 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
 680 {
 681         struct virtio_hw *hw = dev->data->dev_private;
 682         struct virtio_pmd_ctrl ctrl;
 683         int dlen[1];
 684         int ret;
 685
 686         if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
 687                 PMD_INIT_LOG(INFO, "host does not support rx control\n");
 688                 return;
 689         }
 690
 691         ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
 692         ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
 693         ctrl.data[0] = 0;
 694         dlen[0] = 1;
 695
 696         ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
 697         if (ret)
 698                 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
 699 }
 700
 701 #define VLAN_TAG_LEN           4    /* 802.3ac tag (not DMA'd) */
 702 static int
 703 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 704 {
 705         struct virtio_hw *hw = dev->data->dev_private;
 706         uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
 707                                  hw->vtnet_hdr_size;
 708         uint32_t frame_size = mtu + ether_hdr_len;
 709
 710         if (mtu < ETHER_MIN_MTU || frame_size > VIRTIO_MAX_RX_PKTLEN) {
 711                 PMD_INIT_LOG(ERR, "MTU should be between %d and %d\n",
 712                         ETHER_MIN_MTU, VIRTIO_MAX_RX_PKTLEN - ether_hdr_len);
 713                 return -EINVAL;
 714         }
 715         return 0;
 716 }
 717
 718 /*
 719  * dev_ops for virtio, bare necessities for basic operation
 720  */
 721 static const struct eth_dev_ops virtio_eth_dev_ops = {
 722         .dev_configure           = virtio_dev_configure,
 723         .dev_start               = virtio_dev_start,
 724         .dev_stop                = virtio_dev_stop,
 725         .dev_close               = virtio_dev_close,
 726         .promiscuous_enable      = virtio_dev_promiscuous_enable,
 727         .promiscuous_disable     = virtio_dev_promiscuous_disable,
 728         .allmulticast_enable     = virtio_dev_allmulticast_enable,
 729         .allmulticast_disable    = virtio_dev_allmulticast_disable,
 730         .mtu_set                 = virtio_mtu_set,
 731         .dev_infos_get           = virtio_dev_info_get,
 732         .stats_get               = virtio_dev_stats_get,
 733         .xstats_get              = virtio_dev_xstats_get,
 734         .xstats_get_names        = virtio_dev_xstats_get_names,
 735         .stats_reset             = virtio_dev_stats_reset,
 736         .xstats_reset            = virtio_dev_stats_reset,
 737         .link_update             = virtio_dev_link_update,
 738         .rx_queue_setup          = virtio_dev_rx_queue_setup,
 739         .rx_queue_release        = virtio_dev_queue_release,
 740         .tx_queue_setup          = virtio_dev_tx_queue_setup,
 741         .tx_queue_release        = virtio_dev_queue_release,
 742         /* collect stats per queue */
 743         .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
 744         .vlan_filter_set         = virtio_vlan_filter_set,
 745         .mac_addr_add            = virtio_mac_addr_add,
 746         .mac_addr_remove         = virtio_mac_addr_remove,
 747         .mac_addr_set            = virtio_mac_addr_set,
 748 };
 749
 750 static inline int
 751 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
 752                                 struct rte_eth_link *link)
 753 {
 754         struct rte_eth_link *dst = link;
 755         struct rte_eth_link *src = &(dev->data->dev_link);
 756
 757         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 758                         *(uint64_t *)src) == 0)
 759                 return -1;
 760
 761         return 0;
 762 }
 763
 764 /**
 765  * Atomically writes the link status information into global
 766  * structure rte_eth_dev.
 767  *
 768  * @param dev
 769  *   - Pointer to the structure rte_eth_dev to read from.
 770  *   - Pointer to the buffer to be saved with the link status.
 771  *
 772  * @return
 773  *   - On success, zero.
 774  *   - On failure, negative value.
 775  */
 776 static inline int
 777 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 778                 struct rte_eth_link *link)
 779 {
 780         struct rte_eth_link *dst = &(dev->data->dev_link);
 781         struct rte_eth_link *src = link;
 782
 783         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 784                                         *(uint64_t *)src) == 0)
 785                 return -1;
 786
 787         return 0;
 788 }
 789
 790 static void
 791 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 792 {
 793         unsigned i;
 794
 795         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 796                 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
 797                 if (txvq == NULL)
 798                         continue;
 799
 800                 stats->opackets += txvq->stats.packets;
 801                 stats->obytes += txvq->stats.bytes;
 802                 stats->oerrors += txvq->stats.errors;
 803
 804                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 805                         stats->q_opackets[i] = txvq->stats.packets;
 806                         stats->q_obytes[i] = txvq->stats.bytes;
 807                 }
 808         }
 809
 810         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 811                 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
 812                 if (rxvq == NULL)
 813                         continue;
 814
 815                 stats->ipackets += rxvq->stats.packets;
 816                 stats->ibytes += rxvq->stats.bytes;
 817                 stats->ierrors += rxvq->stats.errors;
 818
 819                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 820                         stats->q_ipackets[i] = rxvq->stats.packets;
 821                         stats->q_ibytes[i] = rxvq->stats.bytes;
 822                 }
 823         }
 824
 825         stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
 826 }
 827
 828 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
 829                                        struct rte_eth_xstat_name *xstats_names,
 830                                        __rte_unused unsigned limit)
 831 {
 832         unsigned i;
 833         unsigned count = 0;
 834         unsigned t;
 835
 836         unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
 837                 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
 838
 839         if (xstats_names != NULL) {
 840                 /* Note: limit checked in rte_eth_xstats_names() */
 841
 842                 for (i = 0; i < dev->data->nb_rx_queues; i++) {
 843                         struct virtqueue *rxvq = dev->data->rx_queues[i];
 844                         if (rxvq == NULL)
 845                                 continue;
 846                         for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
 847                                 snprintf(xstats_names[count].name,
 848                                         sizeof(xstats_names[count].name),
 849                                         "rx_q%u_%s", i,
 850                                         rte_virtio_rxq_stat_strings[t].name);
 851                                 count++;
 852                         }
 853                 }
 854
 855                 for (i = 0; i < dev->data->nb_tx_queues; i++) {
 856                         struct virtqueue *txvq = dev->data->tx_queues[i];
 857                         if (txvq == NULL)
 858                                 continue;
 859                         for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
 860                                 snprintf(xstats_names[count].name,
 861                                         sizeof(xstats_names[count].name),
 862                                         "tx_q%u_%s", i,
 863                                         rte_virtio_txq_stat_strings[t].name);
 864                                 count++;
 865                         }
 866                 }
 867                 return count;
 868         }
 869         return nstats;
 870 }
 871
 872 static int
 873 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 874                       unsigned n)
 875 {
 876         unsigned i;
 877         unsigned count = 0;
 878
 879         unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
 880                 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
 881
 882         if (n < nstats)
 883                 return nstats;
 884
 885         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 886                 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
 887
 888                 if (rxvq == NULL)
 889                         continue;
 890
 891                 unsigned t;
 892
 893                 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
 894                         xstats[count].value = *(uint64_t *)(((char *)rxvq) +
 895                                 rte_virtio_rxq_stat_strings[t].offset);
 896                         xstats[count].id = count;
 897                         count++;
 898                 }
 899         }
 900
 901         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 902                 struct virtnet_tx *txvq = dev->data->tx_queues[i];
 903
 904                 if (txvq == NULL)
 905                         continue;
 906
 907                 unsigned t;
 908
 909                 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
 910                         xstats[count].value = *(uint64_t *)(((char *)txvq) +
 911                                 rte_virtio_txq_stat_strings[t].offset);
 912                         xstats[count].id = count;
 913                         count++;
 914                 }
 915         }
 916
 917         return count;
 918 }
 919
 920 static void
 921 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 922 {
 923         virtio_update_stats(dev, stats);
 924 }
 925
 926 static void
 927 virtio_dev_stats_reset(struct rte_eth_dev *dev)
 928 {
 929         unsigned int i;
 930
 931         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 932                 struct virtnet_tx *txvq = dev->data->tx_queues[i];
 933                 if (txvq == NULL)
 934                         continue;
 935
 936                 txvq->stats.packets = 0;
 937                 txvq->stats.bytes = 0;
 938                 txvq->stats.errors = 0;
 939                 txvq->stats.multicast = 0;
 940                 txvq->stats.broadcast = 0;
 941                 memset(txvq->stats.size_bins, 0,
 942                        sizeof(txvq->stats.size_bins[0]) * 8);
 943         }
 944
 945         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 946                 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
 947                 if (rxvq == NULL)
 948                         continue;
 949
 950                 rxvq->stats.packets = 0;
 951                 rxvq->stats.bytes = 0;
 952                 rxvq->stats.errors = 0;
 953                 rxvq->stats.multicast = 0;
 954                 rxvq->stats.broadcast = 0;
 955                 memset(rxvq->stats.size_bins, 0,
 956                        sizeof(rxvq->stats.size_bins[0]) * 8);
 957         }
 958 }
 959
 960 static void
 961 virtio_set_hwaddr(struct virtio_hw *hw)
 962 {
 963         vtpci_write_dev_config(hw,
 964                         offsetof(struct virtio_net_config, mac),
 965                         &hw->mac_addr, ETHER_ADDR_LEN);
 966 }
 967
 968 static void
 969 virtio_get_hwaddr(struct virtio_hw *hw)
 970 {
 971         if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
 972                 vtpci_read_dev_config(hw,
 973                         offsetof(struct virtio_net_config, mac),
 974                         &hw->mac_addr, ETHER_ADDR_LEN);
 975         } else {
 976                 eth_random_addr(&hw->mac_addr[0]);
 977                 virtio_set_hwaddr(hw);
 978         }
 979 }
 980
 981 static void
 982 virtio_mac_table_set(struct virtio_hw *hw,
 983                      const struct virtio_net_ctrl_mac *uc,
 984                      const struct virtio_net_ctrl_mac *mc)
 985 {
 986         struct virtio_pmd_ctrl ctrl;
 987         int err, len[2];
 988
 989         if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
 990                 PMD_DRV_LOG(INFO, "host does not support mac table");
 991                 return;
 992         }
 993
 994         ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
 995         ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
 996
 997         len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
 998         memcpy(ctrl.data, uc, len[0]);
 999
1000         len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1001         memcpy(ctrl.data + len[0], mc, len[1]);
1002
1003         err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1004         if (err != 0)
1005                 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1006 }
1007
1008 static void
1009 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1010                     uint32_t index, uint32_t vmdq __rte_unused)
1011 {
1012         struct virtio_hw *hw = dev->data->dev_private;
1013         const struct ether_addr *addrs = dev->data->mac_addrs;
1014         unsigned int i;
1015         struct virtio_net_ctrl_mac *uc, *mc;
1016
1017         if (index >= VIRTIO_MAX_MAC_ADDRS) {
1018                 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1019                 return;
1020         }
1021
1022         uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1023         uc->entries = 0;
1024         mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1025         mc->entries = 0;
1026
1027         for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1028                 const struct ether_addr *addr
1029                         = (i == index) ? mac_addr : addrs + i;
1030                 struct virtio_net_ctrl_mac *tbl
1031                         = is_multicast_ether_addr(addr) ? mc : uc;
1032
1033                 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1034         }
1035
1036         virtio_mac_table_set(hw, uc, mc);
1037 }
1038
1039 static void
1040 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1041 {
1042         struct virtio_hw *hw = dev->data->dev_private;
1043         struct ether_addr *addrs = dev->data->mac_addrs;
1044         struct virtio_net_ctrl_mac *uc, *mc;
1045         unsigned int i;
1046
1047         if (index >= VIRTIO_MAX_MAC_ADDRS) {
1048                 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1049                 return;
1050         }
1051
1052         uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1053         uc->entries = 0;
1054         mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1055         mc->entries = 0;
1056
1057         for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1058                 struct virtio_net_ctrl_mac *tbl;
1059
1060                 if (i == index || is_zero_ether_addr(addrs + i))
1061                         continue;
1062
1063                 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1064                 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1065         }
1066
1067         virtio_mac_table_set(hw, uc, mc);
1068 }
1069
1070 static void
1071 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1072 {
1073         struct virtio_hw *hw = dev->data->dev_private;
1074
1075         memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1076
1077         /* Use atomic update if available */
1078         if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1079                 struct virtio_pmd_ctrl ctrl;
1080                 int len = ETHER_ADDR_LEN;
1081
1082                 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1083                 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1084
1085                 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1086                 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1087         } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1088                 virtio_set_hwaddr(hw);
1089 }
1090
1091 static int
1092 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1093 {
1094         struct virtio_hw *hw = dev->data->dev_private;
1095         struct virtio_pmd_ctrl ctrl;
1096         int len;
1097
1098         if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1099                 return -ENOTSUP;
1100
1101         ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1102         ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1103         memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1104         len = sizeof(vlan_id);
1105
1106         return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1107 }
1108
1109 static int
1110 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1111 {
1112         uint64_t host_features;
1113
1114         /* Prepare guest_features: feature that driver wants to support */
1115         PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1116                 req_features);
1117
1118         /* Read device(host) feature bits */
1119         host_features = hw->vtpci_ops->get_features(hw);
1120         PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1121                 host_features);
1122
1123         /*
1124          * Negotiate features: Subset of device feature bits are written back
1125          * guest feature bits.
1126          */
1127         hw->guest_features = req_features;
1128         hw->guest_features = vtpci_negotiate_features(hw, host_features);
1129         PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1130                 hw->guest_features);
1131
1132         if (hw->modern) {
1133                 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1134                         PMD_INIT_LOG(ERR,
1135                                 "VIRTIO_F_VERSION_1 features is not enabled.");
1136                         return -1;
1137                 }
1138                 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1139                 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1140                         PMD_INIT_LOG(ERR,
1141                                 "failed to set FEATURES_OK status!");
1142                         return -1;
1143                 }
1144         }
1145
1146         hw->req_guest_features = req_features;
1147
1148         return 0;
1149 }
1150
1151 /*
1152  * Process Virtio Config changed interrupt and call the callback
1153  * if link state changed.
1154  */
1155 static void
1156 virtio_interrupt_handler(struct rte_intr_handle *handle,
1157                          void *param)
1158 {
1159         struct rte_eth_dev *dev = param;
1160         struct virtio_hw *hw = dev->data->dev_private;
1161         uint8_t isr;
1162
1163         /* Read interrupt status which clears interrupt */
1164         isr = vtpci_isr(hw);
1165         PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1166
1167         if (rte_intr_enable(handle) < 0)
1168                 PMD_DRV_LOG(ERR, "interrupt enable failed");
1169
1170         if (isr & VIRTIO_PCI_ISR_CONFIG) {
1171                 if (virtio_dev_link_update(dev, 0) == 0)
1172                         _rte_eth_dev_callback_process(dev,
1173                                                       RTE_ETH_EVENT_INTR_LSC, NULL);
1174         }
1175
1176 }
1177
1178 static void
1179 rx_func_get(struct rte_eth_dev *eth_dev)
1180 {
1181         struct virtio_hw *hw = eth_dev->data->dev_private;
1182         if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1183                 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1184         else
1185                 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1186 }
1187
1188 /* reset device and renegotiate features if needed */
1189 static int
1190 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1191 {
1192         struct virtio_hw *hw = eth_dev->data->dev_private;
1193         struct virtio_net_config *config;
1194         struct virtio_net_config local_config;
1195         struct rte_pci_device *pci_dev = hw->dev;
1196         int ret;
1197
1198         /* Reset the device although not necessary at startup */
1199         vtpci_reset(hw);
1200
1201         /* Tell the host we've noticed this device. */
1202         vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1203
1204         /* Tell the host we've known how to drive the device. */
1205         vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1206         if (virtio_negotiate_features(hw, req_features) < 0)
1207                 return -1;
1208
1209         /* If host does not support status then disable LSC */
1210         if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1211                 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1212         else
1213                 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1214
1215         if (pci_dev) {
1216                 rte_eth_copy_pci_info(eth_dev, pci_dev);
1217                 eth_dev->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
1218         }
1219
1220         rx_func_get(eth_dev);
1221
1222         /* Setting up rx_header size for the device */
1223         if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1224             vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1225                 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1226         else
1227                 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1228
1229         /* Copy the permanent MAC address to: virtio_hw */
1230         virtio_get_hwaddr(hw);
1231         ether_addr_copy((struct ether_addr *) hw->mac_addr,
1232                         &eth_dev->data->mac_addrs[0]);
1233         PMD_INIT_LOG(DEBUG,
1234                      "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1235                      hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1236                      hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1237
1238         if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1239                 config = &local_config;
1240
1241                 vtpci_read_dev_config(hw,
1242                         offsetof(struct virtio_net_config, mac),
1243                         &config->mac, sizeof(config->mac));
1244
1245                 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1246                         vtpci_read_dev_config(hw,
1247                                 offsetof(struct virtio_net_config, status),
1248                                 &config->status, sizeof(config->status));
1249                 } else {
1250                         PMD_INIT_LOG(DEBUG,
1251                                      "VIRTIO_NET_F_STATUS is not supported");
1252                         config->status = 0;
1253                 }
1254
1255                 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1256                         vtpci_read_dev_config(hw,
1257                                 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1258                                 &config->max_virtqueue_pairs,
1259                                 sizeof(config->max_virtqueue_pairs));
1260                 } else {
1261                         PMD_INIT_LOG(DEBUG,
1262                                      "VIRTIO_NET_F_MQ is not supported");
1263                         config->max_virtqueue_pairs = 1;
1264                 }
1265
1266                 hw->max_queue_pairs = config->max_virtqueue_pairs;
1267
1268                 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1269                                 config->max_virtqueue_pairs);
1270                 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1271                 PMD_INIT_LOG(DEBUG,
1272                                 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1273                                 config->mac[0], config->mac[1],
1274                                 config->mac[2], config->mac[3],
1275                                 config->mac[4], config->mac[5]);
1276         } else {
1277                 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1278                 hw->max_queue_pairs = 1;
1279         }
1280
1281         ret = virtio_alloc_queues(eth_dev);
1282         if (ret < 0)
1283                 return ret;
1284         vtpci_reinit_complete(hw);
1285
1286         if (pci_dev)
1287                 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1288                         eth_dev->data->port_id, pci_dev->id.vendor_id,
1289                         pci_dev->id.device_id);
1290
1291         return 0;
1292 }
1293
1294 /*
1295  * This function is based on probe() function in virtio_pci.c
1296  * It returns 0 on success.
1297  */
1298 int
1299 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1300 {
1301         struct virtio_hw *hw = eth_dev->data->dev_private;
1302         uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1303         int ret;
1304
1305         RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1306
1307         eth_dev->dev_ops = &virtio_eth_dev_ops;
1308         eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1309
1310         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1311                 if (hw->use_simple_rxtx) {
1312                         eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple;
1313                         eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1314                 } else {
1315                         rx_func_get(eth_dev);
1316                 }
1317                 return 0;
1318         }
1319
1320         /* Allocate memory for storing MAC addresses */
1321         eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1322         if (eth_dev->data->mac_addrs == NULL) {
1323                 PMD_INIT_LOG(ERR,
1324                         "Failed to allocate %d bytes needed to store MAC addresses",
1325                         VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1326                 return -ENOMEM;
1327         }
1328
1329         /* For virtio_user case the hw->virtio_user_dev is populated by
1330          * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1331          */
1332         if (!hw->virtio_user_dev) {
1333                 ret = vtpci_init(RTE_DEV_TO_PCI(eth_dev->device), hw,
1334                                  &dev_flags);
1335                 if (ret)
1336                         return ret;
1337         }
1338
1339         eth_dev->data->dev_flags = dev_flags;
1340
1341         /* reset device and negotiate default features */
1342         ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1343         if (ret < 0)
1344                 return ret;
1345
1346         /* Setup interrupt callback  */
1347         if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1348                 rte_intr_callback_register(vtpci_intr_handle(hw),
1349                         virtio_interrupt_handler, eth_dev);
1350
1351         return 0;
1352 }
1353
1354 static int
1355 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1356 {
1357         struct virtio_hw *hw = eth_dev->data->dev_private;
1358
1359         PMD_INIT_FUNC_TRACE();
1360
1361         if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1362                 return -EPERM;
1363
1364         virtio_dev_stop(eth_dev);
1365         virtio_dev_close(eth_dev);
1366
1367         eth_dev->dev_ops = NULL;
1368         eth_dev->tx_pkt_burst = NULL;
1369         eth_dev->rx_pkt_burst = NULL;
1370
1371         rte_free(eth_dev->data->mac_addrs);
1372         eth_dev->data->mac_addrs = NULL;
1373
1374         /* reset interrupt callback  */
1375         if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1376                 rte_intr_callback_unregister(vtpci_intr_handle(hw),
1377                                                 virtio_interrupt_handler,
1378                                                 eth_dev);
1379         if (hw->dev)
1380                 rte_eal_pci_unmap_device(hw->dev);
1381
1382         PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1383
1384         return 0;
1385 }
1386
1387 static struct eth_driver rte_virtio_pmd = {
1388         .pci_drv = {
1389                 .driver = {
1390                         .name = "net_virtio",
1391                 },
1392                 .id_table = pci_id_virtio_map,
1393                 .drv_flags = 0,
1394                 .probe = rte_eth_dev_pci_probe,
1395                 .remove = rte_eth_dev_pci_remove,
1396         },
1397         .eth_dev_init = eth_virtio_dev_init,
1398         .eth_dev_uninit = eth_virtio_dev_uninit,
1399         .dev_private_size = sizeof(struct virtio_hw),
1400 };
1401
1402 RTE_INIT(rte_virtio_pmd_init);
1403 static void
1404 rte_virtio_pmd_init(void)
1405 {
1406         if (rte_eal_iopl_init() != 0) {
1407                 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1408                 return;
1409         }
1410
1411         rte_eal_pci_register(&rte_virtio_pmd.pci_drv);
1412 }
1413
1414 /*
1415  * Configure virtio device
1416  * It returns 0 on success.
1417  */
1418 static int
1419 virtio_dev_configure(struct rte_eth_dev *dev)
1420 {
1421         const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1422         struct virtio_hw *hw = dev->data->dev_private;
1423         uint64_t req_features;
1424         int ret;
1425
1426         PMD_INIT_LOG(DEBUG, "configure");
1427         req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1428         if (rxmode->hw_ip_checksum)
1429                 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1430         if (rxmode->enable_lro)
1431                 req_features |=
1432                         (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1433                         (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1434
1435         /* if request features changed, reinit the device */
1436         if (req_features != hw->req_guest_features) {
1437                 ret = virtio_init_device(dev, req_features);
1438                 if (ret < 0)
1439                         return ret;
1440         }
1441
1442         if (rxmode->hw_ip_checksum &&
1443                 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1444                 PMD_DRV_LOG(NOTICE,
1445                         "rx ip checksum not available on this host");
1446                 return -ENOTSUP;
1447         }
1448
1449         if (rxmode->enable_lro &&
1450                 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1451                         !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4))) {
1452                 PMD_DRV_LOG(NOTICE,
1453                         "lro not available on this host");
1454                 return -ENOTSUP;
1455         }
1456
1457         /* start control queue */
1458         if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1459                 virtio_dev_cq_start(dev);
1460
1461         hw->vlan_strip = rxmode->hw_vlan_strip;
1462
1463         if (rxmode->hw_vlan_filter
1464             && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1465                 PMD_DRV_LOG(NOTICE,
1466                             "vlan filtering not available on this host");
1467                 return -ENOTSUP;
1468         }
1469
1470         if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1471                 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1472                         PMD_DRV_LOG(ERR, "failed to set config vector");
1473                         return -EBUSY;
1474                 }
1475
1476         return 0;
1477 }
1478
1479
1480 static int
1481 virtio_dev_start(struct rte_eth_dev *dev)
1482 {
1483         uint16_t nb_queues, i;
1484         struct virtnet_rx *rxvq;
1485         struct virtnet_tx *txvq __rte_unused;
1486         struct virtio_hw *hw = dev->data->dev_private;
1487
1488         /* check if lsc interrupt feature is enabled */
1489         if (dev->data->dev_conf.intr_conf.lsc) {
1490                 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1491                         PMD_DRV_LOG(ERR, "link status not supported by host");
1492                         return -ENOTSUP;
1493                 }
1494
1495                 if (rte_intr_enable(vtpci_intr_handle(hw)) < 0) {
1496                         PMD_DRV_LOG(ERR, "interrupt enable failed");
1497                         return -EIO;
1498                 }
1499         }
1500
1501         /* Initialize Link state */
1502         virtio_dev_link_update(dev, 0);
1503
1504         /*Notify the backend
1505          *Otherwise the tap backend might already stop its queue due to fullness.
1506          *vhost backend will have no chance to be waked up
1507          */
1508         nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
1509         if (hw->max_queue_pairs > 1) {
1510                 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1511                         return -EINVAL;
1512         }
1513
1514         PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1515
1516         for (i = 0; i < dev->data->nb_rx_queues; i++) {
1517                 rxvq = dev->data->rx_queues[i];
1518                 virtqueue_notify(rxvq->vq);
1519         }
1520
1521         PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1522
1523         for (i = 0; i < dev->data->nb_rx_queues; i++) {
1524                 rxvq = dev->data->rx_queues[i];
1525                 VIRTQUEUE_DUMP(rxvq->vq);
1526         }
1527
1528         for (i = 0; i < dev->data->nb_tx_queues; i++) {
1529                 txvq = dev->data->tx_queues[i];
1530                 VIRTQUEUE_DUMP(txvq->vq);
1531         }
1532
1533         return 0;
1534 }
1535
1536 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1537 {
1538         struct rte_mbuf *buf;
1539         int i, mbuf_num = 0;
1540
1541         for (i = 0; i < dev->data->nb_rx_queues; i++) {
1542                 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1543
1544                 PMD_INIT_LOG(DEBUG,
1545                              "Before freeing rxq[%d] used and unused buf", i);
1546                 VIRTQUEUE_DUMP(rxvq->vq);
1547
1548                 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1549                 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1550                         rte_pktmbuf_free(buf);
1551                         mbuf_num++;
1552                 }
1553
1554                 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1555                 PMD_INIT_LOG(DEBUG,
1556                              "After freeing rxq[%d] used and unused buf", i);
1557                 VIRTQUEUE_DUMP(rxvq->vq);
1558         }
1559
1560         for (i = 0; i < dev->data->nb_tx_queues; i++) {
1561                 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1562
1563                 PMD_INIT_LOG(DEBUG,
1564                              "Before freeing txq[%d] used and unused bufs",
1565                              i);
1566                 VIRTQUEUE_DUMP(txvq->vq);
1567
1568                 mbuf_num = 0;
1569                 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1570                         rte_pktmbuf_free(buf);
1571                         mbuf_num++;
1572                 }
1573
1574                 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1575                 PMD_INIT_LOG(DEBUG,
1576                              "After freeing txq[%d] used and unused buf", i);
1577                 VIRTQUEUE_DUMP(txvq->vq);
1578         }
1579 }
1580
1581 /*
1582  * Stop device: disable interrupt and mark link down
1583  */
1584 static void
1585 virtio_dev_stop(struct rte_eth_dev *dev)
1586 {
1587         struct virtio_hw *hw = dev->data->dev_private;
1588         struct rte_eth_link link;
1589
1590         PMD_INIT_LOG(DEBUG, "stop");
1591
1592         if (dev->data->dev_conf.intr_conf.lsc)
1593                 rte_intr_disable(vtpci_intr_handle(hw));
1594
1595         memset(&link, 0, sizeof(link));
1596         virtio_dev_atomic_write_link_status(dev, &link);
1597 }
1598
1599 static int
1600 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1601 {
1602         struct rte_eth_link link, old;
1603         uint16_t status;
1604         struct virtio_hw *hw = dev->data->dev_private;
1605         memset(&link, 0, sizeof(link));
1606         virtio_dev_atomic_read_link_status(dev, &link);
1607         old = link;
1608         link.link_duplex = ETH_LINK_FULL_DUPLEX;
1609         link.link_speed  = SPEED_10G;
1610
1611         if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1612                 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1613                 vtpci_read_dev_config(hw,
1614                                 offsetof(struct virtio_net_config, status),
1615                                 &status, sizeof(status));
1616                 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1617                         link.link_status = ETH_LINK_DOWN;
1618                         PMD_INIT_LOG(DEBUG, "Port %d is down",
1619                                      dev->data->port_id);
1620                 } else {
1621                         link.link_status = ETH_LINK_UP;
1622                         PMD_INIT_LOG(DEBUG, "Port %d is up",
1623                                      dev->data->port_id);
1624                 }
1625         } else {
1626                 link.link_status = ETH_LINK_UP;
1627         }
1628         virtio_dev_atomic_write_link_status(dev, &link);
1629
1630         return (old.link_status == link.link_status) ? -1 : 0;
1631 }
1632
1633 static void
1634 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1635 {
1636         uint64_t tso_mask;
1637         struct virtio_hw *hw = dev->data->dev_private;
1638
1639         dev_info->pci_dev = hw->dev;
1640         dev_info->max_rx_queues =
1641                 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
1642         dev_info->max_tx_queues =
1643                 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
1644         dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1645         dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1646         dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1647         dev_info->default_txconf = (struct rte_eth_txconf) {
1648                 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1649         };
1650         dev_info->rx_offload_capa =
1651                 DEV_RX_OFFLOAD_TCP_CKSUM |
1652                 DEV_RX_OFFLOAD_UDP_CKSUM |
1653                 DEV_RX_OFFLOAD_TCP_LRO;
1654         dev_info->tx_offload_capa = 0;
1655
1656         if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {
1657                 dev_info->tx_offload_capa |=
1658                         DEV_TX_OFFLOAD_UDP_CKSUM |
1659                         DEV_TX_OFFLOAD_TCP_CKSUM;
1660         }
1661
1662         tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1663                 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1664         if ((hw->guest_features & tso_mask) == tso_mask)
1665                 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
1666 }
1667
1668 /*
1669  * It enables testpmd to collect per queue stats.
1670  */
1671 static int
1672 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1673 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1674 __rte_unused uint8_t is_rx)
1675 {
1676         return 0;
1677 }
1678
1679 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
1680 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
1681 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio");