4 * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer in
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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"
62 static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
63 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
64 static int virtio_dev_configure(struct rte_eth_dev *dev);
65 static int virtio_dev_start(struct rte_eth_dev *dev);
66 static void virtio_dev_stop(struct rte_eth_dev *dev);
67 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
68 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
69 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
70 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
71 static void virtio_dev_info_get(struct rte_eth_dev *dev,
72 struct rte_eth_dev_info *dev_info);
73 static int virtio_dev_link_update(struct rte_eth_dev *dev,
74 __rte_unused int wait_to_complete);
76 static void virtio_set_hwaddr(struct virtio_hw *hw);
77 static void virtio_get_hwaddr(struct virtio_hw *hw);
79 static void virtio_dev_stats_get(struct rte_eth_dev *dev,
80 struct rte_eth_stats *stats);
81 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
82 struct rte_eth_xstats *xstats, unsigned n);
83 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
84 struct rte_eth_xstat_name *xstats_names,
86 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
87 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
88 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
89 uint16_t vlan_id, int on);
90 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
91 struct ether_addr *mac_addr,
92 uint32_t index, uint32_t vmdq __rte_unused);
93 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
94 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
95 struct ether_addr *mac_addr);
97 static int virtio_dev_queue_stats_mapping_set(
98 __rte_unused struct rte_eth_dev *eth_dev,
99 __rte_unused uint16_t queue_id,
100 __rte_unused uint8_t stat_idx,
101 __rte_unused uint8_t is_rx);
104 * The set of PCI devices this driver supports
106 static const struct rte_pci_id pci_id_virtio_map[] = {
108 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
109 #include "rte_pci_dev_ids.h"
111 { .vendor_id = 0, /* sentinel */ },
114 struct rte_virtio_xstats_name_off {
115 char name[RTE_ETH_XSTATS_NAME_SIZE];
119 /* [rt]x_qX_ is prepended to the name string here */
120 static const struct rte_virtio_xstats_name_off rte_virtio_q_stat_strings[] = {
121 {"good_packets", offsetof(struct virtqueue, packets)},
122 {"good_bytes", offsetof(struct virtqueue, bytes)},
123 {"errors", offsetof(struct virtqueue, errors)},
124 {"multicast_packets", offsetof(struct virtqueue, multicast)},
125 {"broadcast_packets", offsetof(struct virtqueue, broadcast)},
126 {"undersize_packets", offsetof(struct virtqueue, size_bins[0])},
127 {"size_64_packets", offsetof(struct virtqueue, size_bins[1])},
128 {"size_65_127_packets", offsetof(struct virtqueue, size_bins[2])},
129 {"size_128_255_packets", offsetof(struct virtqueue, size_bins[3])},
130 {"size_256_511_packets", offsetof(struct virtqueue, size_bins[4])},
131 {"size_512_1023_packets", offsetof(struct virtqueue, size_bins[5])},
132 {"size_1024_1517_packets", offsetof(struct virtqueue, size_bins[6])},
133 {"size_1518_max_packets", offsetof(struct virtqueue, size_bins[7])},
136 #define VIRTIO_NB_Q_XSTATS (sizeof(rte_virtio_q_stat_strings) / \
137 sizeof(rte_virtio_q_stat_strings[0]))
140 virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
141 int *dlen, int pkt_num)
145 virtio_net_ctrl_ack status = ~0;
146 struct virtio_pmd_ctrl result;
148 ctrl->status = status;
150 if (!(vq && vq->hw->cvq)) {
151 PMD_INIT_LOG(ERR, "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)
268 struct virtio_hw *hw;
273 hw->vtpci_ops->del_queue(hw, vq);
275 rte_memzone_free(vq->mz);
276 if (vq->virtio_net_hdr_mz)
277 rte_memzone_free(vq->virtio_net_hdr_mz);
279 rte_free(vq->sw_ring);
284 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
287 uint16_t vtpci_queue_idx,
289 unsigned int socket_id,
290 struct virtqueue **pvq)
292 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
293 const struct rte_memzone *mz;
294 unsigned int vq_size, size;
295 struct virtio_hw *hw = dev->data->dev_private;
296 struct virtqueue *vq = NULL;
297 const char *queue_names[] = {"rvq", "txq", "cvq"};
299 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
302 * Read the virtqueue size from the Queue Size field
303 * Always power of 2 and if 0 virtqueue does not exist
305 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
306 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
308 PMD_INIT_LOG(ERR, "virtqueue does not exist");
312 if (!rte_is_power_of_2(vq_size)) {
313 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
317 snprintf(vq_name, sizeof(vq_name), "port%d_%s%d",
318 dev->data->port_id, queue_names[queue_type], queue_idx);
319 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
320 vq_size * sizeof(struct vq_desc_extra),
321 RTE_CACHE_LINE_SIZE);
323 PMD_INIT_LOG(ERR, "Can not allocate virtqueue");
327 if (queue_type == VTNET_RQ) {
330 sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
331 sizeof(vq->sw_ring[0]);
332 vq->sw_ring = rte_zmalloc_socket("rxq->sw_ring", sz_sw,
336 PMD_INIT_LOG(ERR, "Can not allocate RX soft ring");
337 virtio_dev_queue_release(vq);
343 vq->port_id = dev->data->port_id;
344 vq->queue_id = queue_idx;
345 vq->vq_queue_index = vtpci_queue_idx;
346 vq->vq_nentries = vq_size;
348 if (nb_desc == 0 || nb_desc > vq_size)
350 vq->vq_free_cnt = nb_desc;
353 * Reserve a memzone for vring elements
355 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
356 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
357 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
359 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
360 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
362 if (rte_errno == EEXIST)
363 mz = rte_memzone_lookup(vq_name);
365 virtio_dev_queue_release(vq);
371 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
372 * and only accepts 32 bit page frame number.
373 * Check if the allocated physical memory exceeds 16TB.
375 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
376 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
377 virtio_dev_queue_release(vq);
381 memset(mz->addr, 0, sizeof(mz->len));
383 vq->vq_ring_mem = mz->phys_addr;
384 vq->vq_ring_virt_mem = mz->addr;
385 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
386 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
387 vq->virtio_net_hdr_mz = NULL;
388 vq->virtio_net_hdr_mem = 0;
390 if (queue_type == VTNET_TQ) {
391 const struct rte_memzone *hdr_mz;
392 struct virtio_tx_region *txr;
396 * For each xmit packet, allocate a virtio_net_hdr
397 * and indirect ring elements
399 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
400 dev->data->port_id, queue_idx);
401 hdr_mz = rte_memzone_reserve_aligned(vq_name,
402 vq_size * sizeof(*txr),
404 RTE_CACHE_LINE_SIZE);
405 if (hdr_mz == NULL) {
406 if (rte_errno == EEXIST)
407 hdr_mz = rte_memzone_lookup(vq_name);
408 if (hdr_mz == NULL) {
409 virtio_dev_queue_release(vq);
413 vq->virtio_net_hdr_mz = hdr_mz;
414 vq->virtio_net_hdr_mem = hdr_mz->phys_addr;
417 memset(txr, 0, vq_size * sizeof(*txr));
418 for (i = 0; i < vq_size; i++) {
419 struct vring_desc *start_dp = txr[i].tx_indir;
421 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
423 /* first indirect descriptor is always the tx header */
424 start_dp->addr = vq->virtio_net_hdr_mem
426 + offsetof(struct virtio_tx_region, tx_hdr);
428 start_dp->len = vq->hw->vtnet_hdr_size;
429 start_dp->flags = VRING_DESC_F_NEXT;
432 } else if (queue_type == VTNET_CQ) {
433 /* Allocate a page for control vq command, data and status */
434 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
436 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
437 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
438 if (vq->virtio_net_hdr_mz == NULL) {
439 if (rte_errno == EEXIST)
440 vq->virtio_net_hdr_mz =
441 rte_memzone_lookup(vq_name);
442 if (vq->virtio_net_hdr_mz == NULL) {
443 virtio_dev_queue_release(vq);
447 vq->virtio_net_hdr_mem =
448 vq->virtio_net_hdr_mz->phys_addr;
449 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
452 hw->vtpci_ops->setup_queue(hw, vq);
460 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
463 struct virtqueue *vq;
465 struct virtio_hw *hw = dev->data->dev_private;
467 PMD_INIT_FUNC_TRACE();
468 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
469 vtpci_queue_idx, 0, socket_id, &vq);
471 PMD_INIT_LOG(ERR, "control vq initialization failed");
480 virtio_free_queues(struct rte_eth_dev *dev)
484 for (i = 0; i < dev->data->nb_rx_queues; i++)
485 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
487 dev->data->nb_rx_queues = 0;
489 for (i = 0; i < dev->data->nb_tx_queues; i++)
490 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
492 dev->data->nb_tx_queues = 0;
496 virtio_dev_close(struct rte_eth_dev *dev)
498 struct virtio_hw *hw = dev->data->dev_private;
500 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
502 if (hw->started == 1)
503 virtio_dev_stop(dev);
506 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
507 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
509 virtio_dev_free_mbufs(dev);
510 virtio_free_queues(dev);
514 virtio_dev_promiscuous_enable(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 enable promisc");
537 virtio_dev_promiscuous_disable(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_PROMISC;
554 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
556 PMD_INIT_LOG(ERR, "Failed to disable promisc");
560 virtio_dev_allmulticast_enable(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 enable allmulticast");
583 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
585 struct virtio_hw *hw = dev->data->dev_private;
586 struct virtio_pmd_ctrl ctrl;
590 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
591 PMD_INIT_LOG(INFO, "host does not support rx control\n");
595 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
596 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
600 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
602 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
606 * dev_ops for virtio, bare necessities for basic operation
608 static const struct eth_dev_ops virtio_eth_dev_ops = {
609 .dev_configure = virtio_dev_configure,
610 .dev_start = virtio_dev_start,
611 .dev_stop = virtio_dev_stop,
612 .dev_close = virtio_dev_close,
613 .promiscuous_enable = virtio_dev_promiscuous_enable,
614 .promiscuous_disable = virtio_dev_promiscuous_disable,
615 .allmulticast_enable = virtio_dev_allmulticast_enable,
616 .allmulticast_disable = virtio_dev_allmulticast_disable,
618 .dev_infos_get = virtio_dev_info_get,
619 .stats_get = virtio_dev_stats_get,
620 .xstats_get = virtio_dev_xstats_get,
621 .xstats_get_names = virtio_dev_xstats_get_names,
622 .stats_reset = virtio_dev_stats_reset,
623 .xstats_reset = virtio_dev_stats_reset,
624 .link_update = virtio_dev_link_update,
625 .rx_queue_setup = virtio_dev_rx_queue_setup,
626 .rx_queue_release = virtio_dev_rx_queue_release,
627 .tx_queue_setup = virtio_dev_tx_queue_setup,
628 .tx_queue_release = virtio_dev_tx_queue_release,
629 /* collect stats per queue */
630 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
631 .vlan_filter_set = virtio_vlan_filter_set,
632 .mac_addr_add = virtio_mac_addr_add,
633 .mac_addr_remove = virtio_mac_addr_remove,
634 .mac_addr_set = virtio_mac_addr_set,
638 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
639 struct rte_eth_link *link)
641 struct rte_eth_link *dst = link;
642 struct rte_eth_link *src = &(dev->data->dev_link);
644 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
645 *(uint64_t *)src) == 0)
652 * Atomically writes the link status information into global
653 * structure rte_eth_dev.
656 * - Pointer to the structure rte_eth_dev to read from.
657 * - Pointer to the buffer to be saved with the link status.
660 * - On success, zero.
661 * - On failure, negative value.
664 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
665 struct rte_eth_link *link)
667 struct rte_eth_link *dst = &(dev->data->dev_link);
668 struct rte_eth_link *src = link;
670 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
671 *(uint64_t *)src) == 0)
678 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
682 for (i = 0; i < dev->data->nb_tx_queues; i++) {
683 const struct virtqueue *txvq = dev->data->tx_queues[i];
687 stats->opackets += txvq->packets;
688 stats->obytes += txvq->bytes;
689 stats->oerrors += txvq->errors;
691 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
692 stats->q_opackets[i] = txvq->packets;
693 stats->q_obytes[i] = txvq->bytes;
697 for (i = 0; i < dev->data->nb_rx_queues; i++) {
698 const struct virtqueue *rxvq = dev->data->rx_queues[i];
702 stats->ipackets += rxvq->packets;
703 stats->ibytes += rxvq->bytes;
704 stats->ierrors += rxvq->errors;
706 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
707 stats->q_ipackets[i] = rxvq->packets;
708 stats->q_ibytes[i] = rxvq->bytes;
712 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
715 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
716 struct rte_eth_xstat_name *xstats_names,
717 __rte_unused unsigned limit)
723 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_Q_XSTATS +
724 dev->data->nb_rx_queues * VIRTIO_NB_Q_XSTATS;
726 if (xstats_names == NULL) {
727 /* Note: limit checked in rte_eth_xstats_names() */
729 for (i = 0; i < dev->data->nb_rx_queues; i++) {
730 struct virtqueue *rxvq = dev->data->rx_queues[i];
733 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
734 snprintf(xstats_names[count].name,
735 sizeof(xstats_names[count].name),
737 rte_virtio_q_stat_strings[t].name);
738 xstats_names[count].id = count;
743 for (i = 0; i < dev->data->nb_tx_queues; i++) {
744 struct virtqueue *txvq = dev->data->tx_queues[i];
747 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
748 snprintf(xstats_names[count].name,
749 sizeof(xstats_names[count].name),
751 rte_virtio_q_stat_strings[t].name);
752 xstats_names[count].id = count;
762 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats,
768 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_Q_XSTATS +
769 dev->data->nb_rx_queues * VIRTIO_NB_Q_XSTATS;
774 for (i = 0; i < dev->data->nb_rx_queues; i++) {
775 struct virtqueue *rxvq = dev->data->rx_queues[i];
782 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
783 xstats[count].name[0] = '\0';
784 xstats[count].id = count;
785 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
786 rte_virtio_q_stat_strings[t].offset);
791 for (i = 0; i < dev->data->nb_tx_queues; i++) {
792 struct virtqueue *txvq = dev->data->tx_queues[i];
799 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
800 xstats[count].name[0] = '\0';
801 xstats[count].id = count;
802 xstats[count].value = *(uint64_t *)(((char *)txvq) +
803 rte_virtio_q_stat_strings[t].offset);
812 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
814 virtio_update_stats(dev, stats);
818 virtio_dev_stats_reset(struct rte_eth_dev *dev)
822 for (i = 0; i < dev->data->nb_tx_queues; i++) {
823 struct virtqueue *txvq = dev->data->tx_queues[i];
832 memset(txvq->size_bins, 0, sizeof(txvq->size_bins[0]) * 8);
835 for (i = 0; i < dev->data->nb_rx_queues; i++) {
836 struct virtqueue *rxvq = dev->data->rx_queues[i];
845 memset(rxvq->size_bins, 0, sizeof(rxvq->size_bins[0]) * 8);
850 virtio_set_hwaddr(struct virtio_hw *hw)
852 vtpci_write_dev_config(hw,
853 offsetof(struct virtio_net_config, mac),
854 &hw->mac_addr, ETHER_ADDR_LEN);
858 virtio_get_hwaddr(struct virtio_hw *hw)
860 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
861 vtpci_read_dev_config(hw,
862 offsetof(struct virtio_net_config, mac),
863 &hw->mac_addr, ETHER_ADDR_LEN);
865 eth_random_addr(&hw->mac_addr[0]);
866 virtio_set_hwaddr(hw);
871 virtio_mac_table_set(struct virtio_hw *hw,
872 const struct virtio_net_ctrl_mac *uc,
873 const struct virtio_net_ctrl_mac *mc)
875 struct virtio_pmd_ctrl ctrl;
878 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
879 PMD_DRV_LOG(INFO, "host does not support mac table");
883 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
884 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
886 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
887 memcpy(ctrl.data, uc, len[0]);
889 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
890 memcpy(ctrl.data + len[0], mc, len[1]);
892 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
894 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
898 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
899 uint32_t index, uint32_t vmdq __rte_unused)
901 struct virtio_hw *hw = dev->data->dev_private;
902 const struct ether_addr *addrs = dev->data->mac_addrs;
904 struct virtio_net_ctrl_mac *uc, *mc;
906 if (index >= VIRTIO_MAX_MAC_ADDRS) {
907 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
911 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
913 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
916 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
917 const struct ether_addr *addr
918 = (i == index) ? mac_addr : addrs + i;
919 struct virtio_net_ctrl_mac *tbl
920 = is_multicast_ether_addr(addr) ? mc : uc;
922 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
925 virtio_mac_table_set(hw, uc, mc);
929 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
931 struct virtio_hw *hw = dev->data->dev_private;
932 struct ether_addr *addrs = dev->data->mac_addrs;
933 struct virtio_net_ctrl_mac *uc, *mc;
936 if (index >= VIRTIO_MAX_MAC_ADDRS) {
937 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
941 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
943 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
946 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
947 struct virtio_net_ctrl_mac *tbl;
949 if (i == index || is_zero_ether_addr(addrs + i))
952 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
953 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
956 virtio_mac_table_set(hw, uc, mc);
960 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
962 struct virtio_hw *hw = dev->data->dev_private;
964 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
966 /* Use atomic update if available */
967 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
968 struct virtio_pmd_ctrl ctrl;
969 int len = ETHER_ADDR_LEN;
971 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
972 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
974 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
975 virtio_send_command(hw->cvq, &ctrl, &len, 1);
976 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
977 virtio_set_hwaddr(hw);
981 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
983 struct virtio_hw *hw = dev->data->dev_private;
984 struct virtio_pmd_ctrl ctrl;
987 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
990 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
991 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
992 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
993 len = sizeof(vlan_id);
995 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
999 virtio_negotiate_features(struct virtio_hw *hw)
1001 uint64_t host_features;
1003 /* Prepare guest_features: feature that driver wants to support */
1004 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
1005 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1006 hw->guest_features);
1008 /* Read device(host) feature bits */
1009 host_features = hw->vtpci_ops->get_features(hw);
1010 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1014 * Negotiate features: Subset of device feature bits are written back
1015 * guest feature bits.
1017 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1018 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1019 hw->guest_features);
1022 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1024 "VIRTIO_F_VERSION_1 features is not enabled.");
1027 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1028 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1030 "failed to set FEATURES_OK status!");
1039 * Process Virtio Config changed interrupt and call the callback
1040 * if link state changed.
1043 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1046 struct rte_eth_dev *dev = param;
1047 struct virtio_hw *hw = dev->data->dev_private;
1050 /* Read interrupt status which clears interrupt */
1051 isr = vtpci_isr(hw);
1052 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1054 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1055 PMD_DRV_LOG(ERR, "interrupt enable failed");
1057 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1058 if (virtio_dev_link_update(dev, 0) == 0)
1059 _rte_eth_dev_callback_process(dev,
1060 RTE_ETH_EVENT_INTR_LSC);
1066 rx_func_get(struct rte_eth_dev *eth_dev)
1068 struct virtio_hw *hw = eth_dev->data->dev_private;
1069 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1070 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1072 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1076 * This function is based on probe() function in virtio_pci.c
1077 * It returns 0 on success.
1080 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1082 struct virtio_hw *hw = eth_dev->data->dev_private;
1083 struct virtio_net_config *config;
1084 struct virtio_net_config local_config;
1085 struct rte_pci_device *pci_dev;
1086 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1089 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1091 eth_dev->dev_ops = &virtio_eth_dev_ops;
1092 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1094 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1095 rx_func_get(eth_dev);
1099 /* Allocate memory for storing MAC addresses */
1100 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1101 if (eth_dev->data->mac_addrs == NULL) {
1103 "Failed to allocate %d bytes needed to store MAC addresses",
1104 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1108 pci_dev = eth_dev->pci_dev;
1110 ret = vtpci_init(pci_dev, hw, &dev_flags);
1114 /* Reset the device although not necessary at startup */
1117 /* Tell the host we've noticed this device. */
1118 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1120 /* Tell the host we've known how to drive the device. */
1121 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1122 if (virtio_negotiate_features(hw) < 0)
1125 /* If host does not support status then disable LSC */
1126 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1127 dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1129 rte_eth_copy_pci_info(eth_dev, pci_dev);
1130 eth_dev->data->dev_flags = dev_flags;
1132 rx_func_get(eth_dev);
1134 /* Setting up rx_header size for the device */
1135 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1136 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1137 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1139 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1141 /* Copy the permanent MAC address to: virtio_hw */
1142 virtio_get_hwaddr(hw);
1143 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1144 ð_dev->data->mac_addrs[0]);
1146 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1147 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1148 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1150 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1151 config = &local_config;
1153 vtpci_read_dev_config(hw,
1154 offsetof(struct virtio_net_config, mac),
1155 &config->mac, sizeof(config->mac));
1157 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1158 vtpci_read_dev_config(hw,
1159 offsetof(struct virtio_net_config, status),
1160 &config->status, sizeof(config->status));
1163 "VIRTIO_NET_F_STATUS is not supported");
1167 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1168 vtpci_read_dev_config(hw,
1169 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1170 &config->max_virtqueue_pairs,
1171 sizeof(config->max_virtqueue_pairs));
1174 "VIRTIO_NET_F_MQ is not supported");
1175 config->max_virtqueue_pairs = 1;
1179 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1180 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1182 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1183 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1185 virtio_dev_cq_queue_setup(eth_dev,
1186 config->max_virtqueue_pairs * 2,
1189 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1190 config->max_virtqueue_pairs);
1191 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1193 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1194 config->mac[0], config->mac[1],
1195 config->mac[2], config->mac[3],
1196 config->mac[4], config->mac[5]);
1198 hw->max_rx_queues = 1;
1199 hw->max_tx_queues = 1;
1202 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1203 hw->max_rx_queues, hw->max_tx_queues);
1204 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1205 eth_dev->data->port_id, pci_dev->id.vendor_id,
1206 pci_dev->id.device_id);
1208 /* Setup interrupt callback */
1209 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1210 rte_intr_callback_register(&pci_dev->intr_handle,
1211 virtio_interrupt_handler, eth_dev);
1213 virtio_dev_cq_start(eth_dev);
1219 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1221 struct rte_pci_device *pci_dev;
1222 struct virtio_hw *hw = eth_dev->data->dev_private;
1224 PMD_INIT_FUNC_TRACE();
1226 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1229 /* Close it anyway since there's no way to know if closed */
1230 virtio_dev_close(eth_dev);
1232 pci_dev = eth_dev->pci_dev;
1234 eth_dev->dev_ops = NULL;
1235 eth_dev->tx_pkt_burst = NULL;
1236 eth_dev->rx_pkt_burst = NULL;
1238 virtio_dev_queue_release(hw->cvq);
1240 rte_free(eth_dev->data->mac_addrs);
1241 eth_dev->data->mac_addrs = NULL;
1243 /* reset interrupt callback */
1244 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1245 rte_intr_callback_unregister(&pci_dev->intr_handle,
1246 virtio_interrupt_handler,
1248 rte_eal_pci_unmap_device(pci_dev);
1250 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1255 static struct eth_driver rte_virtio_pmd = {
1257 .name = "rte_virtio_pmd",
1258 .id_table = pci_id_virtio_map,
1259 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1261 .eth_dev_init = eth_virtio_dev_init,
1262 .eth_dev_uninit = eth_virtio_dev_uninit,
1263 .dev_private_size = sizeof(struct virtio_hw),
1267 * Driver initialization routine.
1268 * Invoked once at EAL init time.
1269 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1270 * Returns 0 on success.
1273 rte_virtio_pmd_init(const char *name __rte_unused,
1274 const char *param __rte_unused)
1276 if (rte_eal_iopl_init() != 0) {
1277 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1281 rte_eth_driver_register(&rte_virtio_pmd);
1286 * Configure virtio device
1287 * It returns 0 on success.
1290 virtio_dev_configure(struct rte_eth_dev *dev)
1292 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1293 struct virtio_hw *hw = dev->data->dev_private;
1295 PMD_INIT_LOG(DEBUG, "configure");
1297 if (rxmode->hw_ip_checksum) {
1298 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1302 hw->vlan_strip = rxmode->hw_vlan_strip;
1304 if (rxmode->hw_vlan_filter
1305 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1307 "vlan filtering not available on this host");
1311 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1312 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1313 PMD_DRV_LOG(ERR, "failed to set config vector");
1322 virtio_dev_start(struct rte_eth_dev *dev)
1324 uint16_t nb_queues, i;
1325 struct virtio_hw *hw = dev->data->dev_private;
1327 /* check if lsc interrupt feature is enabled */
1328 if (dev->data->dev_conf.intr_conf.lsc) {
1329 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1330 PMD_DRV_LOG(ERR, "link status not supported by host");
1334 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1335 PMD_DRV_LOG(ERR, "interrupt enable failed");
1340 /* Initialize Link state */
1341 virtio_dev_link_update(dev, 0);
1343 /* On restart after stop do not touch queues */
1347 /* Do final configuration before rx/tx engine starts */
1348 virtio_dev_rxtx_start(dev);
1349 vtpci_reinit_complete(hw);
1353 /*Notify the backend
1354 *Otherwise the tap backend might already stop its queue due to fullness.
1355 *vhost backend will have no chance to be waked up
1357 nb_queues = dev->data->nb_rx_queues;
1358 if (nb_queues > 1) {
1359 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1363 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1365 for (i = 0; i < nb_queues; i++)
1366 virtqueue_notify(dev->data->rx_queues[i]);
1368 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1370 for (i = 0; i < dev->data->nb_rx_queues; i++)
1371 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1373 for (i = 0; i < dev->data->nb_tx_queues; i++)
1374 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1379 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1381 struct rte_mbuf *buf;
1382 int i, mbuf_num = 0;
1384 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1386 "Before freeing rxq[%d] used and unused buf", i);
1387 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1389 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1390 i, dev->data->rx_queues[i]);
1391 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1392 dev->data->rx_queues[i])) != NULL) {
1393 rte_pktmbuf_free(buf);
1397 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1399 "After freeing rxq[%d] used and unused buf", i);
1400 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1403 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1405 "Before freeing txq[%d] used and unused bufs",
1407 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1410 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1411 dev->data->tx_queues[i])) != NULL) {
1412 rte_pktmbuf_free(buf);
1417 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1419 "After freeing txq[%d] used and unused buf", i);
1420 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1425 * Stop device: disable interrupt and mark link down
1428 virtio_dev_stop(struct rte_eth_dev *dev)
1430 struct rte_eth_link link;
1431 struct virtio_hw *hw = dev->data->dev_private;
1433 PMD_INIT_LOG(DEBUG, "stop");
1437 if (dev->data->dev_conf.intr_conf.lsc)
1438 rte_intr_disable(&dev->pci_dev->intr_handle);
1440 memset(&link, 0, sizeof(link));
1441 virtio_dev_atomic_write_link_status(dev, &link);
1445 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1447 struct rte_eth_link link, old;
1449 struct virtio_hw *hw = dev->data->dev_private;
1450 memset(&link, 0, sizeof(link));
1451 virtio_dev_atomic_read_link_status(dev, &link);
1453 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1454 link.link_speed = SPEED_10G;
1456 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1457 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1458 vtpci_read_dev_config(hw,
1459 offsetof(struct virtio_net_config, status),
1460 &status, sizeof(status));
1461 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1462 link.link_status = ETH_LINK_DOWN;
1463 PMD_INIT_LOG(DEBUG, "Port %d is down",
1464 dev->data->port_id);
1466 link.link_status = ETH_LINK_UP;
1467 PMD_INIT_LOG(DEBUG, "Port %d is up",
1468 dev->data->port_id);
1471 link.link_status = ETH_LINK_UP;
1473 virtio_dev_atomic_write_link_status(dev, &link);
1475 return (old.link_status == link.link_status) ? -1 : 0;
1479 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1481 struct virtio_hw *hw = dev->data->dev_private;
1483 dev_info->driver_name = dev->driver->pci_drv.name;
1484 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1485 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1486 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1487 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1488 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1489 dev_info->default_txconf = (struct rte_eth_txconf) {
1490 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1495 * It enables testpmd to collect per queue stats.
1498 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1499 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1500 __rte_unused uint8_t is_rx)
1505 static struct rte_driver rte_virtio_driver = {
1507 .init = rte_virtio_pmd_init,
1510 PMD_REGISTER_DRIVER(rte_virtio_driver);