4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
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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)) {
150 "%s(): Control queue is not supported.",
154 head = vq->vq_desc_head_idx;
156 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
157 "vq->hw->cvq = %p vq = %p",
158 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
160 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
163 memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
164 sizeof(struct virtio_pmd_ctrl));
167 * Format is enforced in qemu code:
168 * One TX packet for header;
169 * At least one TX packet per argument;
170 * One RX packet for ACK.
172 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
173 vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
174 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
176 i = vq->vq_ring.desc[head].next;
178 for (k = 0; k < pkt_num; k++) {
179 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
180 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
181 + sizeof(struct virtio_net_ctrl_hdr)
182 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
183 vq->vq_ring.desc[i].len = dlen[k];
186 i = vq->vq_ring.desc[i].next;
189 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
190 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
191 + sizeof(struct virtio_net_ctrl_hdr);
192 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
195 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
197 vq_update_avail_ring(vq, head);
198 vq_update_avail_idx(vq);
200 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
202 virtqueue_notify(vq);
205 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
210 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
211 uint32_t idx, desc_idx, used_idx;
212 struct vring_used_elem *uep;
214 used_idx = (uint32_t)(vq->vq_used_cons_idx
215 & (vq->vq_nentries - 1));
216 uep = &vq->vq_ring.used->ring[used_idx];
217 idx = (uint32_t) uep->id;
220 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
221 desc_idx = vq->vq_ring.desc[desc_idx].next;
225 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
226 vq->vq_desc_head_idx = idx;
228 vq->vq_used_cons_idx++;
232 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
233 vq->vq_free_cnt, vq->vq_desc_head_idx);
235 memcpy(&result, vq->virtio_net_hdr_mz->addr,
236 sizeof(struct virtio_pmd_ctrl));
238 return result.status;
242 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
244 struct virtio_hw *hw = dev->data->dev_private;
245 struct virtio_pmd_ctrl ctrl;
249 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
250 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
251 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
253 dlen[0] = sizeof(uint16_t);
255 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
257 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
258 "failed, this is too late now...");
266 virtio_dev_queue_release(struct virtqueue *vq) {
267 struct virtio_hw *hw;
271 hw->vtpci_ops->del_queue(hw, vq);
273 rte_free(vq->sw_ring);
278 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
281 uint16_t vtpci_queue_idx,
283 unsigned int socket_id,
284 struct virtqueue **pvq)
286 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
287 const struct rte_memzone *mz;
288 unsigned int vq_size, size;
289 struct virtio_hw *hw = dev->data->dev_private;
290 struct virtqueue *vq = NULL;
292 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
295 * Read the virtqueue size from the Queue Size field
296 * Always power of 2 and if 0 virtqueue does not exist
298 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
299 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
301 PMD_INIT_LOG(ERR, "%s: virtqueue does not exist", __func__);
305 if (!rte_is_power_of_2(vq_size)) {
306 PMD_INIT_LOG(ERR, "%s: virtqueue size is not powerof 2", __func__);
310 if (queue_type == VTNET_RQ) {
311 snprintf(vq_name, sizeof(vq_name), "port%d_rvq%d",
312 dev->data->port_id, queue_idx);
313 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
314 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
315 vq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
316 (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
317 sizeof(vq->sw_ring[0]), RTE_CACHE_LINE_SIZE, socket_id);
318 } else if (queue_type == VTNET_TQ) {
319 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d",
320 dev->data->port_id, queue_idx);
321 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
322 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
323 } else if (queue_type == VTNET_CQ) {
324 snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
326 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
327 vq_size * sizeof(struct vq_desc_extra),
328 RTE_CACHE_LINE_SIZE);
331 PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue", __func__);
334 if (queue_type == VTNET_RQ && vq->sw_ring == NULL) {
335 PMD_INIT_LOG(ERR, "%s: Can not allocate RX soft ring",
342 vq->port_id = dev->data->port_id;
343 vq->queue_id = queue_idx;
344 vq->vq_queue_index = vtpci_queue_idx;
345 vq->vq_nentries = vq_size;
347 if (nb_desc == 0 || nb_desc > vq_size)
349 vq->vq_free_cnt = nb_desc;
352 * Reserve a memzone for vring elements
354 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
355 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
356 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
358 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
359 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
361 if (rte_errno == EEXIST)
362 mz = rte_memzone_lookup(vq_name);
370 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
371 * and only accepts 32 bit page frame number.
372 * Check if the allocated physical memory exceeds 16TB.
374 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
375 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
380 memset(mz->addr, 0, sizeof(mz->len));
382 vq->vq_ring_mem = mz->phys_addr;
383 vq->vq_ring_virt_mem = mz->addr;
384 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
385 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
386 vq->virtio_net_hdr_mz = NULL;
387 vq->virtio_net_hdr_mem = 0;
389 if (queue_type == VTNET_TQ) {
391 * For each xmit packet, allocate a virtio_net_hdr
393 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
394 dev->data->port_id, queue_idx);
395 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
396 vq_size * hw->vtnet_hdr_size,
397 socket_id, 0, RTE_CACHE_LINE_SIZE);
398 if (vq->virtio_net_hdr_mz == NULL) {
399 if (rte_errno == EEXIST)
400 vq->virtio_net_hdr_mz =
401 rte_memzone_lookup(vq_name);
402 if (vq->virtio_net_hdr_mz == NULL) {
407 vq->virtio_net_hdr_mem =
408 vq->virtio_net_hdr_mz->phys_addr;
409 memset(vq->virtio_net_hdr_mz->addr, 0,
410 vq_size * hw->vtnet_hdr_size);
411 } else if (queue_type == VTNET_CQ) {
412 /* Allocate a page for control vq command, data and status */
413 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
415 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
416 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
417 if (vq->virtio_net_hdr_mz == NULL) {
418 if (rte_errno == EEXIST)
419 vq->virtio_net_hdr_mz =
420 rte_memzone_lookup(vq_name);
421 if (vq->virtio_net_hdr_mz == NULL) {
426 vq->virtio_net_hdr_mem =
427 vq->virtio_net_hdr_mz->phys_addr;
428 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
431 hw->vtpci_ops->setup_queue(hw, vq);
438 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
441 struct virtqueue *vq;
443 struct virtio_hw *hw = dev->data->dev_private;
445 PMD_INIT_FUNC_TRACE();
446 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
447 vtpci_queue_idx, 0, socket_id, &vq);
449 PMD_INIT_LOG(ERR, "control vq initialization failed");
458 virtio_free_queues(struct rte_eth_dev *dev)
462 for (i = 0; i < dev->data->nb_rx_queues; i++)
463 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
465 dev->data->nb_rx_queues = 0;
467 for (i = 0; i < dev->data->nb_tx_queues; i++)
468 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
470 dev->data->nb_tx_queues = 0;
474 virtio_dev_close(struct rte_eth_dev *dev)
476 struct virtio_hw *hw = dev->data->dev_private;
477 struct rte_pci_device *pci_dev = dev->pci_dev;
479 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
482 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
483 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
486 virtio_dev_free_mbufs(dev);
487 virtio_free_queues(dev);
491 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
493 struct virtio_hw *hw = dev->data->dev_private;
494 struct virtio_pmd_ctrl ctrl;
498 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
499 PMD_INIT_LOG(INFO, "host does not support rx control\n");
503 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
504 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
508 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
510 PMD_INIT_LOG(ERR, "Failed to enable promisc");
514 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
516 struct virtio_hw *hw = dev->data->dev_private;
517 struct virtio_pmd_ctrl ctrl;
521 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
522 PMD_INIT_LOG(INFO, "host does not support rx control\n");
526 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
527 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
531 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
533 PMD_INIT_LOG(ERR, "Failed to disable promisc");
537 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
539 struct virtio_hw *hw = dev->data->dev_private;
540 struct virtio_pmd_ctrl ctrl;
544 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
545 PMD_INIT_LOG(INFO, "host does not support rx control\n");
549 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
550 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
554 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
556 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
560 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
562 struct virtio_hw *hw = dev->data->dev_private;
563 struct virtio_pmd_ctrl ctrl;
567 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
568 PMD_INIT_LOG(INFO, "host does not support rx control\n");
572 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
573 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
577 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
579 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
583 * dev_ops for virtio, bare necessities for basic operation
585 static const struct eth_dev_ops virtio_eth_dev_ops = {
586 .dev_configure = virtio_dev_configure,
587 .dev_start = virtio_dev_start,
588 .dev_stop = virtio_dev_stop,
589 .dev_close = virtio_dev_close,
590 .promiscuous_enable = virtio_dev_promiscuous_enable,
591 .promiscuous_disable = virtio_dev_promiscuous_disable,
592 .allmulticast_enable = virtio_dev_allmulticast_enable,
593 .allmulticast_disable = virtio_dev_allmulticast_disable,
595 .dev_infos_get = virtio_dev_info_get,
596 .stats_get = virtio_dev_stats_get,
597 .xstats_get = virtio_dev_xstats_get,
598 .stats_reset = virtio_dev_stats_reset,
599 .xstats_reset = virtio_dev_stats_reset,
600 .link_update = virtio_dev_link_update,
601 .rx_queue_setup = virtio_dev_rx_queue_setup,
602 .rx_queue_release = virtio_dev_rx_queue_release,
603 .tx_queue_setup = virtio_dev_tx_queue_setup,
604 .tx_queue_release = virtio_dev_tx_queue_release,
605 /* collect stats per queue */
606 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
607 .vlan_filter_set = virtio_vlan_filter_set,
608 .mac_addr_add = virtio_mac_addr_add,
609 .mac_addr_remove = virtio_mac_addr_remove,
610 .mac_addr_set = virtio_mac_addr_set,
614 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
615 struct rte_eth_link *link)
617 struct rte_eth_link *dst = link;
618 struct rte_eth_link *src = &(dev->data->dev_link);
620 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
621 *(uint64_t *)src) == 0)
628 * Atomically writes the link status information into global
629 * structure rte_eth_dev.
632 * - Pointer to the structure rte_eth_dev to read from.
633 * - Pointer to the buffer to be saved with the link status.
636 * - On success, zero.
637 * - On failure, negative value.
640 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
641 struct rte_eth_link *link)
643 struct rte_eth_link *dst = &(dev->data->dev_link);
644 struct rte_eth_link *src = link;
646 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
647 *(uint64_t *)src) == 0)
654 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
658 for (i = 0; i < dev->data->nb_tx_queues; i++) {
659 const struct virtqueue *txvq = dev->data->tx_queues[i];
663 stats->opackets += txvq->packets;
664 stats->obytes += txvq->bytes;
665 stats->oerrors += txvq->errors;
667 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
668 stats->q_opackets[i] = txvq->packets;
669 stats->q_obytes[i] = txvq->bytes;
673 for (i = 0; i < dev->data->nb_rx_queues; i++) {
674 const struct virtqueue *rxvq = dev->data->rx_queues[i];
678 stats->ipackets += rxvq->packets;
679 stats->ibytes += rxvq->bytes;
680 stats->ierrors += rxvq->errors;
682 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
683 stats->q_ipackets[i] = rxvq->packets;
684 stats->q_ibytes[i] = rxvq->bytes;
688 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
692 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats,
698 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_Q_XSTATS +
699 dev->data->nb_rx_queues * VIRTIO_NB_Q_XSTATS;
704 for (i = 0; i < dev->data->nb_rx_queues; i++) {
705 struct virtqueue *rxvq = dev->data->rx_queues[i];
712 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
713 snprintf(xstats[count].name, sizeof(xstats[count].name),
715 rte_virtio_q_stat_strings[t].name);
716 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
717 rte_virtio_q_stat_strings[t].offset);
722 for (i = 0; i < dev->data->nb_tx_queues; i++) {
723 struct virtqueue *txvq = dev->data->tx_queues[i];
730 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
731 snprintf(xstats[count].name, sizeof(xstats[count].name),
733 rte_virtio_q_stat_strings[t].name);
734 xstats[count].value = *(uint64_t *)(((char *)txvq) +
735 rte_virtio_q_stat_strings[t].offset);
744 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
746 virtio_update_stats(dev, stats);
750 virtio_dev_stats_reset(struct rte_eth_dev *dev)
754 for (i = 0; i < dev->data->nb_tx_queues; i++) {
755 struct virtqueue *txvq = dev->data->tx_queues[i];
764 memset(txvq->size_bins, 0, sizeof(txvq->size_bins[0]) * 8);
767 for (i = 0; i < dev->data->nb_rx_queues; i++) {
768 struct virtqueue *rxvq = dev->data->rx_queues[i];
777 memset(rxvq->size_bins, 0, sizeof(rxvq->size_bins[0]) * 8);
782 virtio_set_hwaddr(struct virtio_hw *hw)
784 vtpci_write_dev_config(hw,
785 offsetof(struct virtio_net_config, mac),
786 &hw->mac_addr, ETHER_ADDR_LEN);
790 virtio_get_hwaddr(struct virtio_hw *hw)
792 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
793 vtpci_read_dev_config(hw,
794 offsetof(struct virtio_net_config, mac),
795 &hw->mac_addr, ETHER_ADDR_LEN);
797 eth_random_addr(&hw->mac_addr[0]);
798 virtio_set_hwaddr(hw);
803 virtio_mac_table_set(struct virtio_hw *hw,
804 const struct virtio_net_ctrl_mac *uc,
805 const struct virtio_net_ctrl_mac *mc)
807 struct virtio_pmd_ctrl ctrl;
810 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
811 PMD_DRV_LOG(INFO, "host does not support mac table\n");
815 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
816 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
818 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
819 memcpy(ctrl.data, uc, len[0]);
821 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
822 memcpy(ctrl.data + len[0], mc, len[1]);
824 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
826 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
830 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
831 uint32_t index, uint32_t vmdq __rte_unused)
833 struct virtio_hw *hw = dev->data->dev_private;
834 const struct ether_addr *addrs = dev->data->mac_addrs;
836 struct virtio_net_ctrl_mac *uc, *mc;
838 if (index >= VIRTIO_MAX_MAC_ADDRS) {
839 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
843 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
845 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
848 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
849 const struct ether_addr *addr
850 = (i == index) ? mac_addr : addrs + i;
851 struct virtio_net_ctrl_mac *tbl
852 = is_multicast_ether_addr(addr) ? mc : uc;
854 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
857 virtio_mac_table_set(hw, uc, mc);
861 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
863 struct virtio_hw *hw = dev->data->dev_private;
864 struct ether_addr *addrs = dev->data->mac_addrs;
865 struct virtio_net_ctrl_mac *uc, *mc;
868 if (index >= VIRTIO_MAX_MAC_ADDRS) {
869 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
873 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
875 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
878 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
879 struct virtio_net_ctrl_mac *tbl;
881 if (i == index || is_zero_ether_addr(addrs + i))
884 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
885 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
888 virtio_mac_table_set(hw, uc, mc);
892 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
894 struct virtio_hw *hw = dev->data->dev_private;
896 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
898 /* Use atomic update if available */
899 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
900 struct virtio_pmd_ctrl ctrl;
901 int len = ETHER_ADDR_LEN;
903 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
904 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
906 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
907 virtio_send_command(hw->cvq, &ctrl, &len, 1);
908 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
909 virtio_set_hwaddr(hw);
913 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
915 struct virtio_hw *hw = dev->data->dev_private;
916 struct virtio_pmd_ctrl ctrl;
919 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
922 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
923 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
924 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
925 len = sizeof(vlan_id);
927 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
931 virtio_negotiate_features(struct virtio_hw *hw)
933 uint64_t host_features;
935 /* Prepare guest_features: feature that driver wants to support */
936 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
937 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
940 /* Read device(host) feature bits */
941 host_features = hw->vtpci_ops->get_features(hw);
942 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
946 * Negotiate features: Subset of device feature bits are written back
947 * guest feature bits.
949 hw->guest_features = vtpci_negotiate_features(hw, host_features);
950 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
954 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
956 "VIRTIO_F_VERSION_1 features is not enabled.");
959 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
960 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
962 "failed to set FEATURES_OK status!");
971 * Process Virtio Config changed interrupt and call the callback
972 * if link state changed.
975 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
978 struct rte_eth_dev *dev = param;
979 struct virtio_hw *hw = dev->data->dev_private;
982 /* Read interrupt status which clears interrupt */
984 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
986 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
987 PMD_DRV_LOG(ERR, "interrupt enable failed");
989 if (isr & VIRTIO_PCI_ISR_CONFIG) {
990 if (virtio_dev_link_update(dev, 0) == 0)
991 _rte_eth_dev_callback_process(dev,
992 RTE_ETH_EVENT_INTR_LSC);
998 rx_func_get(struct rte_eth_dev *eth_dev)
1000 struct virtio_hw *hw = eth_dev->data->dev_private;
1001 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1002 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1004 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1008 * This function is based on probe() function in virtio_pci.c
1009 * It returns 0 on success.
1012 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1014 struct virtio_hw *hw = eth_dev->data->dev_private;
1015 struct virtio_net_config *config;
1016 struct virtio_net_config local_config;
1017 struct rte_pci_device *pci_dev;
1019 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
1021 eth_dev->dev_ops = &virtio_eth_dev_ops;
1022 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1024 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1025 rx_func_get(eth_dev);
1029 /* Allocate memory for storing MAC addresses */
1030 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1031 if (eth_dev->data->mac_addrs == NULL) {
1033 "Failed to allocate %d bytes needed to store MAC addresses",
1034 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1038 pci_dev = eth_dev->pci_dev;
1040 if (vtpci_init(pci_dev, hw) < 0)
1043 /* Reset the device although not necessary at startup */
1046 /* Tell the host we've noticed this device. */
1047 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1049 /* Tell the host we've known how to drive the device. */
1050 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1051 if (virtio_negotiate_features(hw) < 0)
1054 /* If host does not support status then disable LSC */
1055 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1056 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1058 rte_eth_copy_pci_info(eth_dev, pci_dev);
1060 rx_func_get(eth_dev);
1062 /* Setting up rx_header size for the device */
1063 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1064 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1065 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1067 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1069 /* Copy the permanent MAC address to: virtio_hw */
1070 virtio_get_hwaddr(hw);
1071 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1072 ð_dev->data->mac_addrs[0]);
1074 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1075 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1076 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1078 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1079 config = &local_config;
1081 vtpci_read_dev_config(hw,
1082 offsetof(struct virtio_net_config, mac),
1083 &config->mac, sizeof(config->mac));
1085 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1086 vtpci_read_dev_config(hw,
1087 offsetof(struct virtio_net_config, status),
1088 &config->status, sizeof(config->status));
1091 "VIRTIO_NET_F_STATUS is not supported");
1095 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1096 vtpci_read_dev_config(hw,
1097 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1098 &config->max_virtqueue_pairs,
1099 sizeof(config->max_virtqueue_pairs));
1102 "VIRTIO_NET_F_MQ is not supported");
1103 config->max_virtqueue_pairs = 1;
1107 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1108 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1110 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1111 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1113 virtio_dev_cq_queue_setup(eth_dev,
1114 config->max_virtqueue_pairs * 2,
1117 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1118 config->max_virtqueue_pairs);
1119 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1121 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1122 config->mac[0], config->mac[1],
1123 config->mac[2], config->mac[3],
1124 config->mac[4], config->mac[5]);
1126 hw->max_rx_queues = 1;
1127 hw->max_tx_queues = 1;
1130 eth_dev->data->nb_rx_queues = hw->max_rx_queues;
1131 eth_dev->data->nb_tx_queues = hw->max_tx_queues;
1133 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1134 hw->max_rx_queues, hw->max_tx_queues);
1135 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1136 eth_dev->data->port_id, pci_dev->id.vendor_id,
1137 pci_dev->id.device_id);
1139 /* Setup interrupt callback */
1140 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1141 rte_intr_callback_register(&pci_dev->intr_handle,
1142 virtio_interrupt_handler, eth_dev);
1144 virtio_dev_cq_start(eth_dev);
1150 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1152 struct rte_pci_device *pci_dev;
1153 struct virtio_hw *hw = eth_dev->data->dev_private;
1155 PMD_INIT_FUNC_TRACE();
1157 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1160 if (hw->started == 1) {
1161 virtio_dev_stop(eth_dev);
1162 virtio_dev_close(eth_dev);
1164 pci_dev = eth_dev->pci_dev;
1166 eth_dev->dev_ops = NULL;
1167 eth_dev->tx_pkt_burst = NULL;
1168 eth_dev->rx_pkt_burst = NULL;
1170 virtio_dev_queue_release(hw->cvq);
1172 rte_free(eth_dev->data->mac_addrs);
1173 eth_dev->data->mac_addrs = NULL;
1175 /* reset interrupt callback */
1176 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1177 rte_intr_callback_unregister(&pci_dev->intr_handle,
1178 virtio_interrupt_handler,
1180 rte_eal_pci_unmap_device(pci_dev);
1182 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1187 static struct eth_driver rte_virtio_pmd = {
1189 .name = "rte_virtio_pmd",
1190 .id_table = pci_id_virtio_map,
1191 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1193 .eth_dev_init = eth_virtio_dev_init,
1194 .eth_dev_uninit = eth_virtio_dev_uninit,
1195 .dev_private_size = sizeof(struct virtio_hw),
1199 * Driver initialization routine.
1200 * Invoked once at EAL init time.
1201 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1202 * Returns 0 on success.
1205 rte_virtio_pmd_init(const char *name __rte_unused,
1206 const char *param __rte_unused)
1208 if (rte_eal_iopl_init() != 0) {
1209 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1213 rte_eth_driver_register(&rte_virtio_pmd);
1218 * Configure virtio device
1219 * It returns 0 on success.
1222 virtio_dev_configure(struct rte_eth_dev *dev)
1224 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1225 struct virtio_hw *hw = dev->data->dev_private;
1226 struct rte_pci_device *pci_dev = dev->pci_dev;
1228 PMD_INIT_LOG(DEBUG, "configure");
1230 if (rxmode->hw_ip_checksum) {
1231 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1235 hw->vlan_strip = rxmode->hw_vlan_strip;
1237 if (rxmode->hw_vlan_filter
1238 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1240 "vlan filtering not available on this host");
1244 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1245 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1246 PMD_DRV_LOG(ERR, "failed to set config vector");
1255 virtio_dev_start(struct rte_eth_dev *dev)
1257 uint16_t nb_queues, i;
1258 struct virtio_hw *hw = dev->data->dev_private;
1259 struct rte_pci_device *pci_dev = dev->pci_dev;
1261 /* check if lsc interrupt feature is enabled */
1262 if (dev->data->dev_conf.intr_conf.lsc) {
1263 if (!(pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
1264 PMD_DRV_LOG(ERR, "link status not supported by host");
1268 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1269 PMD_DRV_LOG(ERR, "interrupt enable failed");
1274 /* Initialize Link state */
1275 virtio_dev_link_update(dev, 0);
1277 /* On restart after stop do not touch queues */
1281 /* Do final configuration before rx/tx engine starts */
1282 virtio_dev_rxtx_start(dev);
1283 vtpci_reinit_complete(hw);
1287 /*Notify the backend
1288 *Otherwise the tap backend might already stop its queue due to fullness.
1289 *vhost backend will have no chance to be waked up
1291 nb_queues = dev->data->nb_rx_queues;
1292 if (nb_queues > 1) {
1293 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1297 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1299 for (i = 0; i < nb_queues; i++)
1300 virtqueue_notify(dev->data->rx_queues[i]);
1302 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1304 for (i = 0; i < dev->data->nb_rx_queues; i++)
1305 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1307 for (i = 0; i < dev->data->nb_tx_queues; i++)
1308 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1313 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1315 struct rte_mbuf *buf;
1316 int i, mbuf_num = 0;
1318 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1320 "Before freeing rxq[%d] used and unused buf", i);
1321 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1323 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1324 i, dev->data->rx_queues[i]);
1325 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1326 dev->data->rx_queues[i])) != NULL) {
1327 rte_pktmbuf_free(buf);
1331 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1333 "After freeing rxq[%d] used and unused buf", i);
1334 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1337 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1339 "Before freeing txq[%d] used and unused bufs",
1341 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1344 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1345 dev->data->tx_queues[i])) != NULL) {
1346 rte_pktmbuf_free(buf);
1351 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1353 "After freeing txq[%d] used and unused buf", i);
1354 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1359 * Stop device: disable interrupt and mark link down
1362 virtio_dev_stop(struct rte_eth_dev *dev)
1364 struct rte_eth_link link;
1366 PMD_INIT_LOG(DEBUG, "stop");
1368 if (dev->data->dev_conf.intr_conf.lsc)
1369 rte_intr_disable(&dev->pci_dev->intr_handle);
1371 memset(&link, 0, sizeof(link));
1372 virtio_dev_atomic_write_link_status(dev, &link);
1376 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1378 struct rte_eth_link link, old;
1380 struct virtio_hw *hw = dev->data->dev_private;
1381 memset(&link, 0, sizeof(link));
1382 virtio_dev_atomic_read_link_status(dev, &link);
1384 link.link_duplex = FULL_DUPLEX;
1385 link.link_speed = SPEED_10G;
1387 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1388 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1389 vtpci_read_dev_config(hw,
1390 offsetof(struct virtio_net_config, status),
1391 &status, sizeof(status));
1392 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1393 link.link_status = 0;
1394 PMD_INIT_LOG(DEBUG, "Port %d is down",
1395 dev->data->port_id);
1397 link.link_status = 1;
1398 PMD_INIT_LOG(DEBUG, "Port %d is up",
1399 dev->data->port_id);
1402 link.link_status = 1; /* Link up */
1404 virtio_dev_atomic_write_link_status(dev, &link);
1406 return (old.link_status == link.link_status) ? -1 : 0;
1410 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1412 struct virtio_hw *hw = dev->data->dev_private;
1414 dev_info->driver_name = dev->driver->pci_drv.name;
1415 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1416 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1417 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1418 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1419 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1420 dev_info->default_txconf = (struct rte_eth_txconf) {
1421 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1426 * It enables testpmd to collect per queue stats.
1429 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1430 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1431 __rte_unused uint8_t is_rx)
1436 static struct rte_driver rte_virtio_driver = {
1438 .init = rte_virtio_pmd_init,
1441 PMD_REGISTER_DRIVER(rte_virtio_driver);