4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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>
48 #include <rte_ether.h>
49 #include <rte_common.h>
50 #include <rte_errno.h>
52 #include <rte_memory.h>
56 #include "virtio_ethdev.h"
57 #include "virtio_pci.h"
58 #include "virtio_logs.h"
59 #include "virtqueue.h"
60 #include "virtio_rxtx.h"
63 static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
64 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
65 static int virtio_dev_configure(struct rte_eth_dev *dev);
66 static int virtio_dev_start(struct rte_eth_dev *dev);
67 static void virtio_dev_stop(struct rte_eth_dev *dev);
68 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
69 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
70 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
71 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
72 static void virtio_dev_info_get(struct rte_eth_dev *dev,
73 struct rte_eth_dev_info *dev_info);
74 static int virtio_dev_link_update(struct rte_eth_dev *dev,
75 __rte_unused int wait_to_complete);
77 static void virtio_set_hwaddr(struct virtio_hw *hw);
78 static void virtio_get_hwaddr(struct virtio_hw *hw);
80 static void virtio_dev_stats_get(struct rte_eth_dev *dev,
81 struct rte_eth_stats *stats);
82 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
83 struct rte_eth_xstats *xstats, unsigned n);
84 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
85 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
86 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
87 uint16_t vlan_id, int on);
88 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
89 struct ether_addr *mac_addr,
90 uint32_t index, uint32_t vmdq __rte_unused);
91 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
92 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
93 struct ether_addr *mac_addr);
95 static int virtio_dev_queue_stats_mapping_set(
96 __rte_unused struct rte_eth_dev *eth_dev,
97 __rte_unused uint16_t queue_id,
98 __rte_unused uint8_t stat_idx,
99 __rte_unused uint8_t is_rx);
102 * The set of PCI devices this driver supports
104 static const struct rte_pci_id pci_id_virtio_map[] = {
106 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
107 #include "rte_pci_dev_ids.h"
109 { .vendor_id = 0, /* sentinel */ },
112 struct rte_virtio_xstats_name_off {
113 char name[RTE_ETH_XSTATS_NAME_SIZE];
117 /* [rt]x_qX_ is prepended to the name string here */
118 static const struct rte_virtio_xstats_name_off rte_virtio_q_stat_strings[] = {
119 {"good_packets", offsetof(struct virtqueue, packets)},
120 {"good_bytes", offsetof(struct virtqueue, bytes)},
121 {"errors", offsetof(struct virtqueue, errors)},
122 {"multicast_packets", offsetof(struct virtqueue, multicast)},
123 {"broadcast_packets", offsetof(struct virtqueue, broadcast)},
124 {"undersize_packets", offsetof(struct virtqueue, size_bins[0])},
125 {"size_64_packets", offsetof(struct virtqueue, size_bins[1])},
126 {"size_65_127_packets", offsetof(struct virtqueue, size_bins[2])},
127 {"size_128_255_packets", offsetof(struct virtqueue, size_bins[3])},
128 {"size_256_511_packets", offsetof(struct virtqueue, size_bins[4])},
129 {"size_512_1023_packets", offsetof(struct virtqueue, size_bins[5])},
130 {"size_1024_1517_packets", offsetof(struct virtqueue, size_bins[6])},
131 {"size_1518_max_packets", offsetof(struct virtqueue, size_bins[7])},
134 #define VIRTIO_NB_Q_XSTATS (sizeof(rte_virtio_q_stat_strings) / \
135 sizeof(rte_virtio_q_stat_strings[0]))
138 virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
139 int *dlen, int pkt_num)
143 virtio_net_ctrl_ack status = ~0;
144 struct virtio_pmd_ctrl result;
146 ctrl->status = status;
148 if (!(vq && vq->hw->cvq)) {
149 PMD_INIT_LOG(ERR, "Control queue is not supported.");
152 head = vq->vq_desc_head_idx;
154 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
155 "vq->hw->cvq = %p vq = %p",
156 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
158 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
161 memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
162 sizeof(struct virtio_pmd_ctrl));
165 * Format is enforced in qemu code:
166 * One TX packet for header;
167 * At least one TX packet per argument;
168 * One RX packet for ACK.
170 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
171 vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
172 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
174 i = vq->vq_ring.desc[head].next;
176 for (k = 0; k < pkt_num; k++) {
177 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
178 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
179 + sizeof(struct virtio_net_ctrl_hdr)
180 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
181 vq->vq_ring.desc[i].len = dlen[k];
184 i = vq->vq_ring.desc[i].next;
187 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
188 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
189 + sizeof(struct virtio_net_ctrl_hdr);
190 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
193 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
195 vq_update_avail_ring(vq, head);
196 vq_update_avail_idx(vq);
198 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
200 virtqueue_notify(vq);
203 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
208 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
209 uint32_t idx, desc_idx, used_idx;
210 struct vring_used_elem *uep;
212 used_idx = (uint32_t)(vq->vq_used_cons_idx
213 & (vq->vq_nentries - 1));
214 uep = &vq->vq_ring.used->ring[used_idx];
215 idx = (uint32_t) uep->id;
218 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
219 desc_idx = vq->vq_ring.desc[desc_idx].next;
223 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
224 vq->vq_desc_head_idx = idx;
226 vq->vq_used_cons_idx++;
230 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
231 vq->vq_free_cnt, vq->vq_desc_head_idx);
233 memcpy(&result, vq->virtio_net_hdr_mz->addr,
234 sizeof(struct virtio_pmd_ctrl));
236 return result.status;
240 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
242 struct virtio_hw *hw = dev->data->dev_private;
243 struct virtio_pmd_ctrl ctrl;
247 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
248 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
249 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
251 dlen[0] = sizeof(uint16_t);
253 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
255 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
256 "failed, this is too late now...");
264 virtio_dev_queue_release(struct virtqueue *vq) {
265 struct virtio_hw *hw;
269 hw->vtpci_ops->del_queue(hw, vq);
271 rte_free(vq->sw_ring);
276 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
279 uint16_t vtpci_queue_idx,
281 unsigned int socket_id,
282 struct virtqueue **pvq)
284 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
285 const struct rte_memzone *mz;
286 unsigned int vq_size, size;
287 struct virtio_hw *hw = dev->data->dev_private;
288 struct virtqueue *vq = NULL;
290 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
293 * Read the virtqueue size from the Queue Size field
294 * Always power of 2 and if 0 virtqueue does not exist
296 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
297 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
299 PMD_INIT_LOG(ERR, "virtqueue does not exist");
303 if (!rte_is_power_of_2(vq_size)) {
304 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
308 if (queue_type == VTNET_RQ) {
309 snprintf(vq_name, sizeof(vq_name), "port%d_rvq%d",
310 dev->data->port_id, queue_idx);
311 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
312 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
313 vq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
314 (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
315 sizeof(vq->sw_ring[0]), RTE_CACHE_LINE_SIZE, socket_id);
316 } else if (queue_type == VTNET_TQ) {
317 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d",
318 dev->data->port_id, queue_idx);
319 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
320 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
321 } else if (queue_type == VTNET_CQ) {
322 snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
324 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
325 vq_size * sizeof(struct vq_desc_extra),
326 RTE_CACHE_LINE_SIZE);
329 PMD_INIT_LOG(ERR, "Can not allocate virtqueue");
332 if (queue_type == VTNET_RQ && vq->sw_ring == NULL) {
333 PMD_INIT_LOG(ERR, "Can not allocate RX soft ring");
339 vq->port_id = dev->data->port_id;
340 vq->queue_id = queue_idx;
341 vq->vq_queue_index = vtpci_queue_idx;
342 vq->vq_nentries = vq_size;
344 if (nb_desc == 0 || nb_desc > vq_size)
346 vq->vq_free_cnt = nb_desc;
349 * Reserve a memzone for vring elements
351 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
352 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
353 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
355 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
356 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
358 if (rte_errno == EEXIST)
359 mz = rte_memzone_lookup(vq_name);
367 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
368 * and only accepts 32 bit page frame number.
369 * Check if the allocated physical memory exceeds 16TB.
371 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
372 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
377 memset(mz->addr, 0, sizeof(mz->len));
379 vq->vq_ring_mem = mz->phys_addr;
380 vq->vq_ring_virt_mem = mz->addr;
381 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
382 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
383 vq->virtio_net_hdr_mz = NULL;
384 vq->virtio_net_hdr_mem = 0;
386 if (queue_type == VTNET_TQ) {
387 const struct rte_memzone *hdr_mz;
388 struct virtio_tx_region *txr;
392 * For each xmit packet, allocate a virtio_net_hdr
393 * and indirect ring elements
395 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
396 dev->data->port_id, queue_idx);
397 hdr_mz = rte_memzone_reserve_aligned(vq_name,
398 vq_size * sizeof(*txr),
400 RTE_CACHE_LINE_SIZE);
401 if (hdr_mz == NULL) {
402 if (rte_errno == EEXIST)
403 hdr_mz = rte_memzone_lookup(vq_name);
404 if (hdr_mz == NULL) {
409 vq->virtio_net_hdr_mz = hdr_mz;
410 vq->virtio_net_hdr_mem = hdr_mz->phys_addr;
413 memset(txr, 0, vq_size * sizeof(*txr));
414 for (i = 0; i < vq_size; i++) {
415 struct vring_desc *start_dp = txr[i].tx_indir;
417 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
419 /* first indirect descriptor is always the tx header */
420 start_dp->addr = vq->virtio_net_hdr_mem
422 + offsetof(struct virtio_tx_region, tx_hdr);
424 start_dp->len = vq->hw->vtnet_hdr_size;
425 start_dp->flags = VRING_DESC_F_NEXT;
428 } else if (queue_type == VTNET_CQ) {
429 /* Allocate a page for control vq command, data and status */
430 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
432 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
433 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
434 if (vq->virtio_net_hdr_mz == NULL) {
435 if (rte_errno == EEXIST)
436 vq->virtio_net_hdr_mz =
437 rte_memzone_lookup(vq_name);
438 if (vq->virtio_net_hdr_mz == NULL) {
443 vq->virtio_net_hdr_mem =
444 vq->virtio_net_hdr_mz->phys_addr;
445 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
448 hw->vtpci_ops->setup_queue(hw, vq);
455 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
458 struct virtqueue *vq;
460 struct virtio_hw *hw = dev->data->dev_private;
462 PMD_INIT_FUNC_TRACE();
463 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
464 vtpci_queue_idx, 0, socket_id, &vq);
466 PMD_INIT_LOG(ERR, "control vq initialization failed");
475 virtio_free_queues(struct rte_eth_dev *dev)
479 for (i = 0; i < dev->data->nb_rx_queues; i++)
480 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
482 dev->data->nb_rx_queues = 0;
484 for (i = 0; i < dev->data->nb_tx_queues; i++)
485 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
487 dev->data->nb_tx_queues = 0;
491 virtio_dev_close(struct rte_eth_dev *dev)
493 struct virtio_hw *hw = dev->data->dev_private;
494 struct rte_pci_device *pci_dev = dev->pci_dev;
496 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
498 if (hw->started == 1)
499 virtio_dev_stop(dev);
502 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
503 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
505 virtio_dev_free_mbufs(dev);
506 virtio_free_queues(dev);
510 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
512 struct virtio_hw *hw = dev->data->dev_private;
513 struct virtio_pmd_ctrl ctrl;
517 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
518 PMD_INIT_LOG(INFO, "host does not support rx control\n");
522 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
523 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
527 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
529 PMD_INIT_LOG(ERR, "Failed to enable promisc");
533 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
535 struct virtio_hw *hw = dev->data->dev_private;
536 struct virtio_pmd_ctrl ctrl;
540 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
541 PMD_INIT_LOG(INFO, "host does not support rx control\n");
545 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
546 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
550 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
552 PMD_INIT_LOG(ERR, "Failed to disable promisc");
556 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
558 struct virtio_hw *hw = dev->data->dev_private;
559 struct virtio_pmd_ctrl ctrl;
563 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
564 PMD_INIT_LOG(INFO, "host does not support rx control\n");
568 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
569 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
573 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
575 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
579 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
581 struct virtio_hw *hw = dev->data->dev_private;
582 struct virtio_pmd_ctrl ctrl;
586 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
587 PMD_INIT_LOG(INFO, "host does not support rx control\n");
591 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
592 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
596 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
598 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
602 * dev_ops for virtio, bare necessities for basic operation
604 static const struct eth_dev_ops virtio_eth_dev_ops = {
605 .dev_configure = virtio_dev_configure,
606 .dev_start = virtio_dev_start,
607 .dev_stop = virtio_dev_stop,
608 .dev_close = virtio_dev_close,
609 .promiscuous_enable = virtio_dev_promiscuous_enable,
610 .promiscuous_disable = virtio_dev_promiscuous_disable,
611 .allmulticast_enable = virtio_dev_allmulticast_enable,
612 .allmulticast_disable = virtio_dev_allmulticast_disable,
614 .dev_infos_get = virtio_dev_info_get,
615 .stats_get = virtio_dev_stats_get,
616 .xstats_get = virtio_dev_xstats_get,
617 .stats_reset = virtio_dev_stats_reset,
618 .xstats_reset = virtio_dev_stats_reset,
619 .link_update = virtio_dev_link_update,
620 .rx_queue_setup = virtio_dev_rx_queue_setup,
621 .rx_queue_release = virtio_dev_rx_queue_release,
622 .tx_queue_setup = virtio_dev_tx_queue_setup,
623 .tx_queue_release = virtio_dev_tx_queue_release,
624 /* collect stats per queue */
625 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
626 .vlan_filter_set = virtio_vlan_filter_set,
627 .mac_addr_add = virtio_mac_addr_add,
628 .mac_addr_remove = virtio_mac_addr_remove,
629 .mac_addr_set = virtio_mac_addr_set,
633 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
634 struct rte_eth_link *link)
636 struct rte_eth_link *dst = link;
637 struct rte_eth_link *src = &(dev->data->dev_link);
639 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
640 *(uint64_t *)src) == 0)
647 * Atomically writes the link status information into global
648 * structure rte_eth_dev.
651 * - Pointer to the structure rte_eth_dev to read from.
652 * - Pointer to the buffer to be saved with the link status.
655 * - On success, zero.
656 * - On failure, negative value.
659 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
660 struct rte_eth_link *link)
662 struct rte_eth_link *dst = &(dev->data->dev_link);
663 struct rte_eth_link *src = link;
665 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
666 *(uint64_t *)src) == 0)
673 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
677 for (i = 0; i < dev->data->nb_tx_queues; i++) {
678 const struct virtqueue *txvq = dev->data->tx_queues[i];
682 stats->opackets += txvq->packets;
683 stats->obytes += txvq->bytes;
684 stats->oerrors += txvq->errors;
686 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
687 stats->q_opackets[i] = txvq->packets;
688 stats->q_obytes[i] = txvq->bytes;
692 for (i = 0; i < dev->data->nb_rx_queues; i++) {
693 const struct virtqueue *rxvq = dev->data->rx_queues[i];
697 stats->ipackets += rxvq->packets;
698 stats->ibytes += rxvq->bytes;
699 stats->ierrors += rxvq->errors;
701 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
702 stats->q_ipackets[i] = rxvq->packets;
703 stats->q_ibytes[i] = rxvq->bytes;
707 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
711 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats,
717 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_Q_XSTATS +
718 dev->data->nb_rx_queues * VIRTIO_NB_Q_XSTATS;
723 for (i = 0; i < dev->data->nb_rx_queues; i++) {
724 struct virtqueue *rxvq = dev->data->rx_queues[i];
731 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
732 snprintf(xstats[count].name, sizeof(xstats[count].name),
734 rte_virtio_q_stat_strings[t].name);
735 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
736 rte_virtio_q_stat_strings[t].offset);
741 for (i = 0; i < dev->data->nb_tx_queues; i++) {
742 struct virtqueue *txvq = dev->data->tx_queues[i];
749 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
750 snprintf(xstats[count].name, sizeof(xstats[count].name),
752 rte_virtio_q_stat_strings[t].name);
753 xstats[count].value = *(uint64_t *)(((char *)txvq) +
754 rte_virtio_q_stat_strings[t].offset);
763 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
765 virtio_update_stats(dev, stats);
769 virtio_dev_stats_reset(struct rte_eth_dev *dev)
773 for (i = 0; i < dev->data->nb_tx_queues; i++) {
774 struct virtqueue *txvq = dev->data->tx_queues[i];
783 memset(txvq->size_bins, 0, sizeof(txvq->size_bins[0]) * 8);
786 for (i = 0; i < dev->data->nb_rx_queues; i++) {
787 struct virtqueue *rxvq = dev->data->rx_queues[i];
796 memset(rxvq->size_bins, 0, sizeof(rxvq->size_bins[0]) * 8);
801 virtio_set_hwaddr(struct virtio_hw *hw)
803 vtpci_write_dev_config(hw,
804 offsetof(struct virtio_net_config, mac),
805 &hw->mac_addr, ETHER_ADDR_LEN);
809 virtio_get_hwaddr(struct virtio_hw *hw)
811 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
812 vtpci_read_dev_config(hw,
813 offsetof(struct virtio_net_config, mac),
814 &hw->mac_addr, ETHER_ADDR_LEN);
816 eth_random_addr(&hw->mac_addr[0]);
817 virtio_set_hwaddr(hw);
822 virtio_mac_table_set(struct virtio_hw *hw,
823 const struct virtio_net_ctrl_mac *uc,
824 const struct virtio_net_ctrl_mac *mc)
826 struct virtio_pmd_ctrl ctrl;
829 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
830 PMD_DRV_LOG(INFO, "host does not support mac table");
834 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
835 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
837 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
838 memcpy(ctrl.data, uc, len[0]);
840 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
841 memcpy(ctrl.data + len[0], mc, len[1]);
843 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
845 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
849 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
850 uint32_t index, uint32_t vmdq __rte_unused)
852 struct virtio_hw *hw = dev->data->dev_private;
853 const struct ether_addr *addrs = dev->data->mac_addrs;
855 struct virtio_net_ctrl_mac *uc, *mc;
857 if (index >= VIRTIO_MAX_MAC_ADDRS) {
858 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
862 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
864 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
867 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
868 const struct ether_addr *addr
869 = (i == index) ? mac_addr : addrs + i;
870 struct virtio_net_ctrl_mac *tbl
871 = is_multicast_ether_addr(addr) ? mc : uc;
873 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
876 virtio_mac_table_set(hw, uc, mc);
880 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
882 struct virtio_hw *hw = dev->data->dev_private;
883 struct ether_addr *addrs = dev->data->mac_addrs;
884 struct virtio_net_ctrl_mac *uc, *mc;
887 if (index >= VIRTIO_MAX_MAC_ADDRS) {
888 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
892 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
894 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
897 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
898 struct virtio_net_ctrl_mac *tbl;
900 if (i == index || is_zero_ether_addr(addrs + i))
903 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
904 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
907 virtio_mac_table_set(hw, uc, mc);
911 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
913 struct virtio_hw *hw = dev->data->dev_private;
915 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
917 /* Use atomic update if available */
918 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
919 struct virtio_pmd_ctrl ctrl;
920 int len = ETHER_ADDR_LEN;
922 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
923 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
925 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
926 virtio_send_command(hw->cvq, &ctrl, &len, 1);
927 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
928 virtio_set_hwaddr(hw);
932 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
934 struct virtio_hw *hw = dev->data->dev_private;
935 struct virtio_pmd_ctrl ctrl;
938 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
941 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
942 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
943 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
944 len = sizeof(vlan_id);
946 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
950 virtio_negotiate_features(struct virtio_hw *hw)
952 uint64_t host_features;
954 /* Prepare guest_features: feature that driver wants to support */
955 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
956 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
959 /* Read device(host) feature bits */
960 host_features = hw->vtpci_ops->get_features(hw);
961 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
965 * Negotiate features: Subset of device feature bits are written back
966 * guest feature bits.
968 hw->guest_features = vtpci_negotiate_features(hw, host_features);
969 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
973 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
975 "VIRTIO_F_VERSION_1 features is not enabled.");
978 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
979 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
981 "failed to set FEATURES_OK status!");
990 * Process Virtio Config changed interrupt and call the callback
991 * if link state changed.
994 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
997 struct rte_eth_dev *dev = param;
998 struct virtio_hw *hw = dev->data->dev_private;
1001 /* Read interrupt status which clears interrupt */
1002 isr = vtpci_isr(hw);
1003 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1005 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1006 PMD_DRV_LOG(ERR, "interrupt enable failed");
1008 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1009 if (virtio_dev_link_update(dev, 0) == 0)
1010 _rte_eth_dev_callback_process(dev,
1011 RTE_ETH_EVENT_INTR_LSC);
1017 rx_func_get(struct rte_eth_dev *eth_dev)
1019 struct virtio_hw *hw = eth_dev->data->dev_private;
1020 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1021 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1023 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1027 * This function is based on probe() function in virtio_pci.c
1028 * It returns 0 on success.
1031 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1033 struct virtio_hw *hw = eth_dev->data->dev_private;
1034 struct virtio_net_config *config;
1035 struct virtio_net_config local_config;
1036 struct rte_pci_device *pci_dev;
1039 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1041 eth_dev->dev_ops = &virtio_eth_dev_ops;
1042 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1044 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1045 rx_func_get(eth_dev);
1049 /* Allocate memory for storing MAC addresses */
1050 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1051 if (eth_dev->data->mac_addrs == NULL) {
1053 "Failed to allocate %d bytes needed to store MAC addresses",
1054 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1058 pci_dev = eth_dev->pci_dev;
1060 ret = vtpci_init(pci_dev, hw);
1064 /* Reset the device although not necessary at startup */
1067 /* Tell the host we've noticed this device. */
1068 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1070 /* Tell the host we've known how to drive the device. */
1071 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1072 if (virtio_negotiate_features(hw) < 0)
1075 /* If host does not support status then disable LSC */
1076 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1077 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1079 rte_eth_copy_pci_info(eth_dev, pci_dev);
1081 rx_func_get(eth_dev);
1083 /* Setting up rx_header size for the device */
1084 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1085 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1086 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1088 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1090 /* Copy the permanent MAC address to: virtio_hw */
1091 virtio_get_hwaddr(hw);
1092 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1093 ð_dev->data->mac_addrs[0]);
1095 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1096 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1097 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1099 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1100 config = &local_config;
1102 vtpci_read_dev_config(hw,
1103 offsetof(struct virtio_net_config, mac),
1104 &config->mac, sizeof(config->mac));
1106 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1107 vtpci_read_dev_config(hw,
1108 offsetof(struct virtio_net_config, status),
1109 &config->status, sizeof(config->status));
1112 "VIRTIO_NET_F_STATUS is not supported");
1116 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1117 vtpci_read_dev_config(hw,
1118 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1119 &config->max_virtqueue_pairs,
1120 sizeof(config->max_virtqueue_pairs));
1123 "VIRTIO_NET_F_MQ is not supported");
1124 config->max_virtqueue_pairs = 1;
1128 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1129 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1131 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1132 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1134 virtio_dev_cq_queue_setup(eth_dev,
1135 config->max_virtqueue_pairs * 2,
1138 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1139 config->max_virtqueue_pairs);
1140 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1142 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1143 config->mac[0], config->mac[1],
1144 config->mac[2], config->mac[3],
1145 config->mac[4], config->mac[5]);
1147 hw->max_rx_queues = 1;
1148 hw->max_tx_queues = 1;
1151 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1152 hw->max_rx_queues, hw->max_tx_queues);
1153 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1154 eth_dev->data->port_id, pci_dev->id.vendor_id,
1155 pci_dev->id.device_id);
1157 /* Setup interrupt callback */
1158 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1159 rte_intr_callback_register(&pci_dev->intr_handle,
1160 virtio_interrupt_handler, eth_dev);
1162 virtio_dev_cq_start(eth_dev);
1168 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1170 struct rte_pci_device *pci_dev;
1171 struct virtio_hw *hw = eth_dev->data->dev_private;
1173 PMD_INIT_FUNC_TRACE();
1175 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1178 /* Close it anyway since there's no way to know if closed */
1179 virtio_dev_close(eth_dev);
1181 pci_dev = eth_dev->pci_dev;
1183 eth_dev->dev_ops = NULL;
1184 eth_dev->tx_pkt_burst = NULL;
1185 eth_dev->rx_pkt_burst = NULL;
1187 virtio_dev_queue_release(hw->cvq);
1189 rte_free(eth_dev->data->mac_addrs);
1190 eth_dev->data->mac_addrs = NULL;
1192 /* reset interrupt callback */
1193 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1194 rte_intr_callback_unregister(&pci_dev->intr_handle,
1195 virtio_interrupt_handler,
1197 rte_eal_pci_unmap_device(pci_dev);
1199 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1204 static struct eth_driver rte_virtio_pmd = {
1206 .name = "rte_virtio_pmd",
1207 .id_table = pci_id_virtio_map,
1208 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1210 .eth_dev_init = eth_virtio_dev_init,
1211 .eth_dev_uninit = eth_virtio_dev_uninit,
1212 .dev_private_size = sizeof(struct virtio_hw),
1216 * Driver initialization routine.
1217 * Invoked once at EAL init time.
1218 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1219 * Returns 0 on success.
1222 rte_virtio_pmd_init(const char *name __rte_unused,
1223 const char *param __rte_unused)
1225 if (rte_eal_iopl_init() != 0) {
1226 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1230 rte_eth_driver_register(&rte_virtio_pmd);
1235 * Configure virtio device
1236 * It returns 0 on success.
1239 virtio_dev_configure(struct rte_eth_dev *dev)
1241 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1242 struct virtio_hw *hw = dev->data->dev_private;
1243 struct rte_pci_device *pci_dev = dev->pci_dev;
1245 PMD_INIT_LOG(DEBUG, "configure");
1247 if (rxmode->hw_ip_checksum) {
1248 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1252 hw->vlan_strip = rxmode->hw_vlan_strip;
1254 if (rxmode->hw_vlan_filter
1255 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1257 "vlan filtering not available on this host");
1261 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1262 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1263 PMD_DRV_LOG(ERR, "failed to set config vector");
1272 virtio_dev_start(struct rte_eth_dev *dev)
1274 uint16_t nb_queues, i;
1275 struct virtio_hw *hw = dev->data->dev_private;
1276 struct rte_pci_device *pci_dev = dev->pci_dev;
1278 /* check if lsc interrupt feature is enabled */
1279 if (dev->data->dev_conf.intr_conf.lsc) {
1280 if (!(pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
1281 PMD_DRV_LOG(ERR, "link status not supported by host");
1285 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1286 PMD_DRV_LOG(ERR, "interrupt enable failed");
1291 /* Initialize Link state */
1292 virtio_dev_link_update(dev, 0);
1294 /* On restart after stop do not touch queues */
1298 /* Do final configuration before rx/tx engine starts */
1299 virtio_dev_rxtx_start(dev);
1300 vtpci_reinit_complete(hw);
1304 /*Notify the backend
1305 *Otherwise the tap backend might already stop its queue due to fullness.
1306 *vhost backend will have no chance to be waked up
1308 nb_queues = dev->data->nb_rx_queues;
1309 if (nb_queues > 1) {
1310 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1314 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1316 for (i = 0; i < nb_queues; i++)
1317 virtqueue_notify(dev->data->rx_queues[i]);
1319 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1321 for (i = 0; i < dev->data->nb_rx_queues; i++)
1322 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1324 for (i = 0; i < dev->data->nb_tx_queues; i++)
1325 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1330 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1332 struct rte_mbuf *buf;
1333 int i, mbuf_num = 0;
1335 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1337 "Before freeing rxq[%d] used and unused buf", i);
1338 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1340 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1341 i, dev->data->rx_queues[i]);
1342 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1343 dev->data->rx_queues[i])) != NULL) {
1344 rte_pktmbuf_free(buf);
1348 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1350 "After freeing rxq[%d] used and unused buf", i);
1351 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1354 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1356 "Before freeing txq[%d] used and unused bufs",
1358 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1361 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1362 dev->data->tx_queues[i])) != NULL) {
1363 rte_pktmbuf_free(buf);
1368 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1370 "After freeing txq[%d] used and unused buf", i);
1371 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1376 * Stop device: disable interrupt and mark link down
1379 virtio_dev_stop(struct rte_eth_dev *dev)
1381 struct rte_eth_link link;
1382 struct virtio_hw *hw = dev->data->dev_private;
1384 PMD_INIT_LOG(DEBUG, "stop");
1388 if (dev->data->dev_conf.intr_conf.lsc)
1389 rte_intr_disable(&dev->pci_dev->intr_handle);
1391 memset(&link, 0, sizeof(link));
1392 virtio_dev_atomic_write_link_status(dev, &link);
1396 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1398 struct rte_eth_link link, old;
1400 struct virtio_hw *hw = dev->data->dev_private;
1401 memset(&link, 0, sizeof(link));
1402 virtio_dev_atomic_read_link_status(dev, &link);
1404 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1405 link.link_speed = SPEED_10G;
1407 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1408 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1409 vtpci_read_dev_config(hw,
1410 offsetof(struct virtio_net_config, status),
1411 &status, sizeof(status));
1412 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1413 link.link_status = ETH_LINK_DOWN;
1414 PMD_INIT_LOG(DEBUG, "Port %d is down",
1415 dev->data->port_id);
1417 link.link_status = ETH_LINK_UP;
1418 PMD_INIT_LOG(DEBUG, "Port %d is up",
1419 dev->data->port_id);
1422 link.link_status = ETH_LINK_UP;
1424 virtio_dev_atomic_write_link_status(dev, &link);
1426 return (old.link_status == link.link_status) ? -1 : 0;
1430 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1432 struct virtio_hw *hw = dev->data->dev_private;
1434 dev_info->driver_name = dev->driver->pci_drv.name;
1435 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1436 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1437 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1438 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1439 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1440 dev_info->default_txconf = (struct rte_eth_txconf) {
1441 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1446 * It enables testpmd to collect per queue stats.
1449 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1450 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1451 __rte_unused uint8_t is_rx)
1456 static struct rte_driver rte_virtio_driver = {
1458 .init = rte_virtio_pmd_init,
1461 PMD_REGISTER_DRIVER(rte_virtio_driver);