4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 void virtio_dev_stats_reset(struct rte_eth_dev *dev);
84 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
85 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
86 uint16_t vlan_id, int on);
87 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
88 struct ether_addr *mac_addr,
89 uint32_t index, uint32_t vmdq __rte_unused);
90 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
91 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
92 struct ether_addr *mac_addr);
94 static int virtio_dev_queue_stats_mapping_set(
95 __rte_unused struct rte_eth_dev *eth_dev,
96 __rte_unused uint16_t queue_id,
97 __rte_unused uint8_t stat_idx,
98 __rte_unused uint8_t is_rx);
101 * The set of PCI devices this driver supports
103 static const struct rte_pci_id pci_id_virtio_map[] = {
105 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
106 #include "rte_pci_dev_ids.h"
108 { .vendor_id = 0, /* sentinel */ },
111 struct rte_virtio_xstats_name_off {
112 char name[RTE_ETH_XSTATS_NAME_SIZE];
116 /* [rt]x_qX_ is prepended to the name string here */
117 static const struct rte_virtio_xstats_name_off rte_virtio_q_stat_strings[] = {
118 {"good_packets", offsetof(struct virtqueue, packets)},
119 {"good_bytes", offsetof(struct virtqueue, bytes)},
120 {"errors", offsetof(struct virtqueue, errors)},
121 {"multicast_packets", offsetof(struct virtqueue, multicast)},
122 {"broadcast_packets", offsetof(struct virtqueue, broadcast)},
123 {"undersize_packets", offsetof(struct virtqueue, size_bins[0])},
124 {"size_64_packets", offsetof(struct virtqueue, size_bins[1])},
125 {"size_65_127_packets", offsetof(struct virtqueue, size_bins[2])},
126 {"size_128_255_packets", offsetof(struct virtqueue, size_bins[3])},
127 {"size_256_511_packets", offsetof(struct virtqueue, size_bins[4])},
128 {"size_512_1023_packets", offsetof(struct virtqueue, size_bins[5])},
129 {"size_1024_1517_packets", offsetof(struct virtqueue, size_bins[6])},
130 {"size_1518_max_packets", offsetof(struct virtqueue, size_bins[7])},
133 #define VIRTIO_NB_Q_XSTATS (sizeof(rte_virtio_q_stat_strings) / \
134 sizeof(rte_virtio_q_stat_strings[0]))
137 virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
138 int *dlen, int pkt_num)
142 virtio_net_ctrl_ack status = ~0;
143 struct virtio_pmd_ctrl result;
145 ctrl->status = status;
147 if (!(vq && vq->hw->cvq)) {
148 PMD_INIT_LOG(ERR, "Control queue is not supported.");
151 head = vq->vq_desc_head_idx;
153 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
154 "vq->hw->cvq = %p vq = %p",
155 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
157 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
160 memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
161 sizeof(struct virtio_pmd_ctrl));
164 * Format is enforced in qemu code:
165 * One TX packet for header;
166 * At least one TX packet per argument;
167 * One RX packet for ACK.
169 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
170 vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
171 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
173 i = vq->vq_ring.desc[head].next;
175 for (k = 0; k < pkt_num; k++) {
176 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
177 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
178 + sizeof(struct virtio_net_ctrl_hdr)
179 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
180 vq->vq_ring.desc[i].len = dlen[k];
183 i = vq->vq_ring.desc[i].next;
186 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
187 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
188 + sizeof(struct virtio_net_ctrl_hdr);
189 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
192 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
194 vq_update_avail_ring(vq, head);
195 vq_update_avail_idx(vq);
197 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
199 virtqueue_notify(vq);
202 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
207 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
208 uint32_t idx, desc_idx, used_idx;
209 struct vring_used_elem *uep;
211 used_idx = (uint32_t)(vq->vq_used_cons_idx
212 & (vq->vq_nentries - 1));
213 uep = &vq->vq_ring.used->ring[used_idx];
214 idx = (uint32_t) uep->id;
217 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
218 desc_idx = vq->vq_ring.desc[desc_idx].next;
222 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
223 vq->vq_desc_head_idx = idx;
225 vq->vq_used_cons_idx++;
229 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
230 vq->vq_free_cnt, vq->vq_desc_head_idx);
232 memcpy(&result, vq->virtio_net_hdr_mz->addr,
233 sizeof(struct virtio_pmd_ctrl));
235 return result.status;
239 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
241 struct virtio_hw *hw = dev->data->dev_private;
242 struct virtio_pmd_ctrl ctrl;
246 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
247 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
248 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
250 dlen[0] = sizeof(uint16_t);
252 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
254 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
255 "failed, this is too late now...");
263 virtio_dev_queue_release(struct virtqueue *vq)
265 struct virtio_hw *hw;
270 hw->vtpci_ops->del_queue(hw, vq);
272 rte_memzone_free(vq->mz);
273 if (vq->virtio_net_hdr_mz)
274 rte_memzone_free(vq->virtio_net_hdr_mz);
276 rte_free(vq->sw_ring);
281 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
284 uint16_t vtpci_queue_idx,
286 unsigned int socket_id,
287 struct virtqueue **pvq)
289 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
290 const struct rte_memzone *mz;
291 unsigned int vq_size, size;
292 struct virtio_hw *hw = dev->data->dev_private;
293 struct virtqueue *vq = NULL;
294 const char *queue_names[] = {"rvq", "txq", "cvq"};
296 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
299 * Read the virtqueue size from the Queue Size field
300 * Always power of 2 and if 0 virtqueue does not exist
302 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
303 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
305 PMD_INIT_LOG(ERR, "virtqueue does not exist");
309 if (!rte_is_power_of_2(vq_size)) {
310 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
314 snprintf(vq_name, sizeof(vq_name), "port%d_%s%d",
315 dev->data->port_id, queue_names[queue_type], queue_idx);
316 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
317 vq_size * sizeof(struct vq_desc_extra),
318 RTE_CACHE_LINE_SIZE);
320 PMD_INIT_LOG(ERR, "Can not allocate virtqueue");
324 if (queue_type == VTNET_RQ) {
327 sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
328 sizeof(vq->sw_ring[0]);
329 vq->sw_ring = rte_zmalloc_socket("rxq->sw_ring", sz_sw,
333 PMD_INIT_LOG(ERR, "Can not allocate RX soft ring");
334 virtio_dev_queue_release(vq);
340 vq->port_id = dev->data->port_id;
341 vq->queue_id = queue_idx;
342 vq->vq_queue_index = vtpci_queue_idx;
343 vq->vq_nentries = vq_size;
345 if (nb_desc == 0 || nb_desc > vq_size)
347 vq->vq_free_cnt = nb_desc;
350 * Reserve a memzone for vring elements
352 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
353 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
354 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
356 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
357 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
359 if (rte_errno == EEXIST)
360 mz = rte_memzone_lookup(vq_name);
362 virtio_dev_queue_release(vq);
368 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
369 * and only accepts 32 bit page frame number.
370 * Check if the allocated physical memory exceeds 16TB.
372 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
373 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
374 virtio_dev_queue_release(vq);
378 memset(mz->addr, 0, sizeof(mz->len));
380 vq->vq_ring_mem = mz->phys_addr;
381 vq->vq_ring_virt_mem = mz->addr;
382 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
383 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
384 vq->virtio_net_hdr_mz = NULL;
385 vq->virtio_net_hdr_mem = 0;
387 if (queue_type == VTNET_TQ) {
388 const struct rte_memzone *hdr_mz;
389 struct virtio_tx_region *txr;
393 * For each xmit packet, allocate a virtio_net_hdr
394 * and indirect ring elements
396 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
397 dev->data->port_id, queue_idx);
398 hdr_mz = rte_memzone_reserve_aligned(vq_name,
399 vq_size * sizeof(*txr),
401 RTE_CACHE_LINE_SIZE);
402 if (hdr_mz == NULL) {
403 if (rte_errno == EEXIST)
404 hdr_mz = rte_memzone_lookup(vq_name);
405 if (hdr_mz == NULL) {
406 virtio_dev_queue_release(vq);
410 vq->virtio_net_hdr_mz = hdr_mz;
411 vq->virtio_net_hdr_mem = hdr_mz->phys_addr;
414 memset(txr, 0, vq_size * sizeof(*txr));
415 for (i = 0; i < vq_size; i++) {
416 struct vring_desc *start_dp = txr[i].tx_indir;
418 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
420 /* first indirect descriptor is always the tx header */
421 start_dp->addr = vq->virtio_net_hdr_mem
423 + offsetof(struct virtio_tx_region, tx_hdr);
425 start_dp->len = vq->hw->vtnet_hdr_size;
426 start_dp->flags = VRING_DESC_F_NEXT;
429 } else if (queue_type == VTNET_CQ) {
430 /* Allocate a page for control vq command, data and status */
431 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
433 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
434 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
435 if (vq->virtio_net_hdr_mz == NULL) {
436 if (rte_errno == EEXIST)
437 vq->virtio_net_hdr_mz =
438 rte_memzone_lookup(vq_name);
439 if (vq->virtio_net_hdr_mz == NULL) {
440 virtio_dev_queue_release(vq);
444 vq->virtio_net_hdr_mem =
445 vq->virtio_net_hdr_mz->phys_addr;
446 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
449 hw->vtpci_ops->setup_queue(hw, vq);
457 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
460 struct virtqueue *vq;
462 struct virtio_hw *hw = dev->data->dev_private;
464 PMD_INIT_FUNC_TRACE();
465 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
466 vtpci_queue_idx, 0, socket_id, &vq);
468 PMD_INIT_LOG(ERR, "control vq initialization failed");
477 virtio_free_queues(struct rte_eth_dev *dev)
481 for (i = 0; i < dev->data->nb_rx_queues; i++)
482 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
484 dev->data->nb_rx_queues = 0;
486 for (i = 0; i < dev->data->nb_tx_queues; i++)
487 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
489 dev->data->nb_tx_queues = 0;
493 virtio_dev_close(struct rte_eth_dev *dev)
495 struct virtio_hw *hw = dev->data->dev_private;
497 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
499 if (hw->started == 1)
500 virtio_dev_stop(dev);
503 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
504 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
506 virtio_dev_free_mbufs(dev);
507 virtio_free_queues(dev);
511 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
513 struct virtio_hw *hw = dev->data->dev_private;
514 struct virtio_pmd_ctrl ctrl;
518 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
519 PMD_INIT_LOG(INFO, "host does not support rx control\n");
523 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
524 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
528 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
530 PMD_INIT_LOG(ERR, "Failed to enable promisc");
534 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
536 struct virtio_hw *hw = dev->data->dev_private;
537 struct virtio_pmd_ctrl ctrl;
541 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
542 PMD_INIT_LOG(INFO, "host does not support rx control\n");
546 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
547 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
551 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
553 PMD_INIT_LOG(ERR, "Failed to disable promisc");
557 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
559 struct virtio_hw *hw = dev->data->dev_private;
560 struct virtio_pmd_ctrl ctrl;
564 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
565 PMD_INIT_LOG(INFO, "host does not support rx control\n");
569 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
570 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
574 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
576 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
580 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
582 struct virtio_hw *hw = dev->data->dev_private;
583 struct virtio_pmd_ctrl ctrl;
587 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
588 PMD_INIT_LOG(INFO, "host does not support rx control\n");
592 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
593 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
597 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
599 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
603 * dev_ops for virtio, bare necessities for basic operation
605 static const struct eth_dev_ops virtio_eth_dev_ops = {
606 .dev_configure = virtio_dev_configure,
607 .dev_start = virtio_dev_start,
608 .dev_stop = virtio_dev_stop,
609 .dev_close = virtio_dev_close,
610 .promiscuous_enable = virtio_dev_promiscuous_enable,
611 .promiscuous_disable = virtio_dev_promiscuous_disable,
612 .allmulticast_enable = virtio_dev_allmulticast_enable,
613 .allmulticast_disable = virtio_dev_allmulticast_disable,
615 .dev_infos_get = virtio_dev_info_get,
616 .stats_get = virtio_dev_stats_get,
617 .xstats_get = virtio_dev_xstats_get,
618 .stats_reset = virtio_dev_stats_reset,
619 .xstats_reset = virtio_dev_stats_reset,
620 .link_update = virtio_dev_link_update,
621 .rx_queue_setup = virtio_dev_rx_queue_setup,
622 .rx_queue_release = virtio_dev_rx_queue_release,
623 .tx_queue_setup = virtio_dev_tx_queue_setup,
624 .tx_queue_release = virtio_dev_tx_queue_release,
625 /* collect stats per queue */
626 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
627 .vlan_filter_set = virtio_vlan_filter_set,
628 .mac_addr_add = virtio_mac_addr_add,
629 .mac_addr_remove = virtio_mac_addr_remove,
630 .mac_addr_set = virtio_mac_addr_set,
634 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
635 struct rte_eth_link *link)
637 struct rte_eth_link *dst = link;
638 struct rte_eth_link *src = &(dev->data->dev_link);
640 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
641 *(uint64_t *)src) == 0)
648 * Atomically writes the link status information into global
649 * structure rte_eth_dev.
652 * - Pointer to the structure rte_eth_dev to read from.
653 * - Pointer to the buffer to be saved with the link status.
656 * - On success, zero.
657 * - On failure, negative value.
660 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
661 struct rte_eth_link *link)
663 struct rte_eth_link *dst = &(dev->data->dev_link);
664 struct rte_eth_link *src = link;
666 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
667 *(uint64_t *)src) == 0)
674 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
678 for (i = 0; i < dev->data->nb_tx_queues; i++) {
679 const struct virtqueue *txvq = dev->data->tx_queues[i];
683 stats->opackets += txvq->packets;
684 stats->obytes += txvq->bytes;
685 stats->oerrors += txvq->errors;
687 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
688 stats->q_opackets[i] = txvq->packets;
689 stats->q_obytes[i] = txvq->bytes;
693 for (i = 0; i < dev->data->nb_rx_queues; i++) {
694 const struct virtqueue *rxvq = dev->data->rx_queues[i];
698 stats->ipackets += rxvq->packets;
699 stats->ibytes += rxvq->bytes;
700 stats->ierrors += rxvq->errors;
702 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
703 stats->q_ipackets[i] = rxvq->packets;
704 stats->q_ibytes[i] = rxvq->bytes;
708 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
712 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats,
718 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_Q_XSTATS +
719 dev->data->nb_rx_queues * VIRTIO_NB_Q_XSTATS;
724 for (i = 0; i < dev->data->nb_rx_queues; i++) {
725 struct virtqueue *rxvq = dev->data->rx_queues[i];
732 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
733 snprintf(xstats[count].name, sizeof(xstats[count].name),
735 rte_virtio_q_stat_strings[t].name);
736 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
737 rte_virtio_q_stat_strings[t].offset);
742 for (i = 0; i < dev->data->nb_tx_queues; i++) {
743 struct virtqueue *txvq = dev->data->tx_queues[i];
750 for (t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
751 snprintf(xstats[count].name, sizeof(xstats[count].name),
753 rte_virtio_q_stat_strings[t].name);
754 xstats[count].value = *(uint64_t *)(((char *)txvq) +
755 rte_virtio_q_stat_strings[t].offset);
764 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
766 virtio_update_stats(dev, stats);
770 virtio_dev_stats_reset(struct rte_eth_dev *dev)
774 for (i = 0; i < dev->data->nb_tx_queues; i++) {
775 struct virtqueue *txvq = dev->data->tx_queues[i];
784 memset(txvq->size_bins, 0, sizeof(txvq->size_bins[0]) * 8);
787 for (i = 0; i < dev->data->nb_rx_queues; i++) {
788 struct virtqueue *rxvq = dev->data->rx_queues[i];
797 memset(rxvq->size_bins, 0, sizeof(rxvq->size_bins[0]) * 8);
802 virtio_set_hwaddr(struct virtio_hw *hw)
804 vtpci_write_dev_config(hw,
805 offsetof(struct virtio_net_config, mac),
806 &hw->mac_addr, ETHER_ADDR_LEN);
810 virtio_get_hwaddr(struct virtio_hw *hw)
812 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
813 vtpci_read_dev_config(hw,
814 offsetof(struct virtio_net_config, mac),
815 &hw->mac_addr, ETHER_ADDR_LEN);
817 eth_random_addr(&hw->mac_addr[0]);
818 virtio_set_hwaddr(hw);
823 virtio_mac_table_set(struct virtio_hw *hw,
824 const struct virtio_net_ctrl_mac *uc,
825 const struct virtio_net_ctrl_mac *mc)
827 struct virtio_pmd_ctrl ctrl;
830 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
831 PMD_DRV_LOG(INFO, "host does not support mac table");
835 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
836 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
838 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
839 memcpy(ctrl.data, uc, len[0]);
841 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
842 memcpy(ctrl.data + len[0], mc, len[1]);
844 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
846 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
850 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
851 uint32_t index, uint32_t vmdq __rte_unused)
853 struct virtio_hw *hw = dev->data->dev_private;
854 const struct ether_addr *addrs = dev->data->mac_addrs;
856 struct virtio_net_ctrl_mac *uc, *mc;
858 if (index >= VIRTIO_MAX_MAC_ADDRS) {
859 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
863 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
865 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
868 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
869 const struct ether_addr *addr
870 = (i == index) ? mac_addr : addrs + i;
871 struct virtio_net_ctrl_mac *tbl
872 = is_multicast_ether_addr(addr) ? mc : uc;
874 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
877 virtio_mac_table_set(hw, uc, mc);
881 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
883 struct virtio_hw *hw = dev->data->dev_private;
884 struct ether_addr *addrs = dev->data->mac_addrs;
885 struct virtio_net_ctrl_mac *uc, *mc;
888 if (index >= VIRTIO_MAX_MAC_ADDRS) {
889 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
893 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
895 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
898 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
899 struct virtio_net_ctrl_mac *tbl;
901 if (i == index || is_zero_ether_addr(addrs + i))
904 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
905 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
908 virtio_mac_table_set(hw, uc, mc);
912 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
914 struct virtio_hw *hw = dev->data->dev_private;
916 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
918 /* Use atomic update if available */
919 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
920 struct virtio_pmd_ctrl ctrl;
921 int len = ETHER_ADDR_LEN;
923 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
924 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
926 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
927 virtio_send_command(hw->cvq, &ctrl, &len, 1);
928 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
929 virtio_set_hwaddr(hw);
933 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
935 struct virtio_hw *hw = dev->data->dev_private;
936 struct virtio_pmd_ctrl ctrl;
939 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
942 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
943 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
944 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
945 len = sizeof(vlan_id);
947 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
951 virtio_negotiate_features(struct virtio_hw *hw)
953 uint64_t host_features;
955 /* Prepare guest_features: feature that driver wants to support */
956 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
957 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
960 /* Read device(host) feature bits */
961 host_features = hw->vtpci_ops->get_features(hw);
962 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
966 * Negotiate features: Subset of device feature bits are written back
967 * guest feature bits.
969 hw->guest_features = vtpci_negotiate_features(hw, host_features);
970 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
974 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
976 "VIRTIO_F_VERSION_1 features is not enabled.");
979 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
980 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
982 "failed to set FEATURES_OK status!");
991 * Process Virtio Config changed interrupt and call the callback
992 * if link state changed.
995 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
998 struct rte_eth_dev *dev = param;
999 struct virtio_hw *hw = dev->data->dev_private;
1002 /* Read interrupt status which clears interrupt */
1003 isr = vtpci_isr(hw);
1004 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1006 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1007 PMD_DRV_LOG(ERR, "interrupt enable failed");
1009 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1010 if (virtio_dev_link_update(dev, 0) == 0)
1011 _rte_eth_dev_callback_process(dev,
1012 RTE_ETH_EVENT_INTR_LSC);
1018 rx_func_get(struct rte_eth_dev *eth_dev)
1020 struct virtio_hw *hw = eth_dev->data->dev_private;
1021 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1022 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1024 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1028 * This function is based on probe() function in virtio_pci.c
1029 * It returns 0 on success.
1032 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1034 struct virtio_hw *hw = eth_dev->data->dev_private;
1035 struct virtio_net_config *config;
1036 struct virtio_net_config local_config;
1037 struct rte_pci_device *pci_dev;
1038 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1041 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1043 eth_dev->dev_ops = &virtio_eth_dev_ops;
1044 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1046 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1047 rx_func_get(eth_dev);
1051 /* Allocate memory for storing MAC addresses */
1052 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1053 if (eth_dev->data->mac_addrs == NULL) {
1055 "Failed to allocate %d bytes needed to store MAC addresses",
1056 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1060 pci_dev = eth_dev->pci_dev;
1062 ret = vtpci_init(pci_dev, hw, &dev_flags);
1066 /* Reset the device although not necessary at startup */
1069 /* Tell the host we've noticed this device. */
1070 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1072 /* Tell the host we've known how to drive the device. */
1073 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1074 if (virtio_negotiate_features(hw) < 0)
1077 /* If host does not support status then disable LSC */
1078 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1079 dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1081 rte_eth_copy_pci_info(eth_dev, pci_dev);
1082 eth_dev->data->dev_flags = dev_flags;
1084 rx_func_get(eth_dev);
1086 /* Setting up rx_header size for the device */
1087 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1088 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1089 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1091 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1093 /* Copy the permanent MAC address to: virtio_hw */
1094 virtio_get_hwaddr(hw);
1095 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1096 ð_dev->data->mac_addrs[0]);
1098 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1099 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1100 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1102 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1103 config = &local_config;
1105 vtpci_read_dev_config(hw,
1106 offsetof(struct virtio_net_config, mac),
1107 &config->mac, sizeof(config->mac));
1109 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1110 vtpci_read_dev_config(hw,
1111 offsetof(struct virtio_net_config, status),
1112 &config->status, sizeof(config->status));
1115 "VIRTIO_NET_F_STATUS is not supported");
1119 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1120 vtpci_read_dev_config(hw,
1121 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1122 &config->max_virtqueue_pairs,
1123 sizeof(config->max_virtqueue_pairs));
1126 "VIRTIO_NET_F_MQ is not supported");
1127 config->max_virtqueue_pairs = 1;
1131 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1132 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1134 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1135 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1137 virtio_dev_cq_queue_setup(eth_dev,
1138 config->max_virtqueue_pairs * 2,
1141 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1142 config->max_virtqueue_pairs);
1143 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1145 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1146 config->mac[0], config->mac[1],
1147 config->mac[2], config->mac[3],
1148 config->mac[4], config->mac[5]);
1150 hw->max_rx_queues = 1;
1151 hw->max_tx_queues = 1;
1154 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1155 hw->max_rx_queues, hw->max_tx_queues);
1156 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1157 eth_dev->data->port_id, pci_dev->id.vendor_id,
1158 pci_dev->id.device_id);
1160 /* Setup interrupt callback */
1161 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1162 rte_intr_callback_register(&pci_dev->intr_handle,
1163 virtio_interrupt_handler, eth_dev);
1165 virtio_dev_cq_start(eth_dev);
1171 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1173 struct rte_pci_device *pci_dev;
1174 struct virtio_hw *hw = eth_dev->data->dev_private;
1176 PMD_INIT_FUNC_TRACE();
1178 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1181 /* Close it anyway since there's no way to know if closed */
1182 virtio_dev_close(eth_dev);
1184 pci_dev = eth_dev->pci_dev;
1186 eth_dev->dev_ops = NULL;
1187 eth_dev->tx_pkt_burst = NULL;
1188 eth_dev->rx_pkt_burst = NULL;
1190 virtio_dev_queue_release(hw->cvq);
1192 rte_free(eth_dev->data->mac_addrs);
1193 eth_dev->data->mac_addrs = NULL;
1195 /* reset interrupt callback */
1196 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1197 rte_intr_callback_unregister(&pci_dev->intr_handle,
1198 virtio_interrupt_handler,
1200 rte_eal_pci_unmap_device(pci_dev);
1202 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1207 static struct eth_driver rte_virtio_pmd = {
1209 .name = "rte_virtio_pmd",
1210 .id_table = pci_id_virtio_map,
1211 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1213 .eth_dev_init = eth_virtio_dev_init,
1214 .eth_dev_uninit = eth_virtio_dev_uninit,
1215 .dev_private_size = sizeof(struct virtio_hw),
1219 * Driver initialization routine.
1220 * Invoked once at EAL init time.
1221 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1222 * Returns 0 on success.
1225 rte_virtio_pmd_init(const char *name __rte_unused,
1226 const char *param __rte_unused)
1228 if (rte_eal_iopl_init() != 0) {
1229 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1233 rte_eth_driver_register(&rte_virtio_pmd);
1238 * Configure virtio device
1239 * It returns 0 on success.
1242 virtio_dev_configure(struct rte_eth_dev *dev)
1244 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1245 struct virtio_hw *hw = dev->data->dev_private;
1247 PMD_INIT_LOG(DEBUG, "configure");
1249 if (rxmode->hw_ip_checksum) {
1250 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1254 hw->vlan_strip = rxmode->hw_vlan_strip;
1256 if (rxmode->hw_vlan_filter
1257 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1259 "vlan filtering not available on this host");
1263 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1264 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1265 PMD_DRV_LOG(ERR, "failed to set config vector");
1274 virtio_dev_start(struct rte_eth_dev *dev)
1276 uint16_t nb_queues, i;
1277 struct virtio_hw *hw = dev->data->dev_private;
1279 /* check if lsc interrupt feature is enabled */
1280 if (dev->data->dev_conf.intr_conf.lsc) {
1281 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1282 PMD_DRV_LOG(ERR, "link status not supported by host");
1286 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1287 PMD_DRV_LOG(ERR, "interrupt enable failed");
1292 /* Initialize Link state */
1293 virtio_dev_link_update(dev, 0);
1295 /* On restart after stop do not touch queues */
1299 /* Do final configuration before rx/tx engine starts */
1300 virtio_dev_rxtx_start(dev);
1301 vtpci_reinit_complete(hw);
1305 /*Notify the backend
1306 *Otherwise the tap backend might already stop its queue due to fullness.
1307 *vhost backend will have no chance to be waked up
1309 nb_queues = dev->data->nb_rx_queues;
1310 if (nb_queues > 1) {
1311 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1315 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1317 for (i = 0; i < nb_queues; i++)
1318 virtqueue_notify(dev->data->rx_queues[i]);
1320 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1322 for (i = 0; i < dev->data->nb_rx_queues; i++)
1323 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1325 for (i = 0; i < dev->data->nb_tx_queues; i++)
1326 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1331 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1333 struct rte_mbuf *buf;
1334 int i, mbuf_num = 0;
1336 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1338 "Before freeing rxq[%d] used and unused buf", i);
1339 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1341 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1342 i, dev->data->rx_queues[i]);
1343 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1344 dev->data->rx_queues[i])) != NULL) {
1345 rte_pktmbuf_free(buf);
1349 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1351 "After freeing rxq[%d] used and unused buf", i);
1352 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1355 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1357 "Before freeing txq[%d] used and unused bufs",
1359 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1362 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1363 dev->data->tx_queues[i])) != NULL) {
1364 rte_pktmbuf_free(buf);
1369 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1371 "After freeing txq[%d] used and unused buf", i);
1372 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1377 * Stop device: disable interrupt and mark link down
1380 virtio_dev_stop(struct rte_eth_dev *dev)
1382 struct rte_eth_link link;
1383 struct virtio_hw *hw = dev->data->dev_private;
1385 PMD_INIT_LOG(DEBUG, "stop");
1389 if (dev->data->dev_conf.intr_conf.lsc)
1390 rte_intr_disable(&dev->pci_dev->intr_handle);
1392 memset(&link, 0, sizeof(link));
1393 virtio_dev_atomic_write_link_status(dev, &link);
1397 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1399 struct rte_eth_link link, old;
1401 struct virtio_hw *hw = dev->data->dev_private;
1402 memset(&link, 0, sizeof(link));
1403 virtio_dev_atomic_read_link_status(dev, &link);
1405 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1406 link.link_speed = SPEED_10G;
1408 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1409 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1410 vtpci_read_dev_config(hw,
1411 offsetof(struct virtio_net_config, status),
1412 &status, sizeof(status));
1413 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1414 link.link_status = ETH_LINK_DOWN;
1415 PMD_INIT_LOG(DEBUG, "Port %d is down",
1416 dev->data->port_id);
1418 link.link_status = ETH_LINK_UP;
1419 PMD_INIT_LOG(DEBUG, "Port %d is up",
1420 dev->data->port_id);
1423 link.link_status = ETH_LINK_UP;
1425 virtio_dev_atomic_write_link_status(dev, &link);
1427 return (old.link_status == link.link_status) ? -1 : 0;
1431 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1433 struct virtio_hw *hw = dev->data->dev_private;
1435 dev_info->driver_name = dev->driver->pci_drv.name;
1436 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1437 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1438 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1439 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1440 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1441 dev_info->default_txconf = (struct rte_eth_txconf) {
1442 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1447 * It enables testpmd to collect per queue stats.
1450 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1451 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1452 __rte_unused uint8_t is_rx)
1457 static struct rte_driver rte_virtio_driver = {
1459 .init = rte_virtio_pmd_init,
1462 PMD_REGISTER_DRIVER(rte_virtio_driver);