4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #ifdef RTE_EXEC_ENV_LINUXAPP
44 #include <rte_ethdev.h>
45 #include <rte_memcpy.h>
46 #include <rte_string_fns.h>
47 #include <rte_memzone.h>
48 #include <rte_malloc.h>
49 #include <rte_atomic.h>
50 #include <rte_branch_prediction.h>
52 #include <rte_ether.h>
53 #include <rte_common.h>
54 #include <rte_errno.h>
56 #include <rte_memory.h>
60 #include "virtio_ethdev.h"
61 #include "virtio_pci.h"
62 #include "virtio_logs.h"
63 #include "virtqueue.h"
64 #include "virtio_rxtx.h"
67 static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
68 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
69 static int virtio_dev_configure(struct rte_eth_dev *dev);
70 static int virtio_dev_start(struct rte_eth_dev *dev);
71 static void virtio_dev_stop(struct rte_eth_dev *dev);
72 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
73 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
74 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
75 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
76 static void virtio_dev_info_get(struct rte_eth_dev *dev,
77 struct rte_eth_dev_info *dev_info);
78 static int virtio_dev_link_update(struct rte_eth_dev *dev,
79 __rte_unused int wait_to_complete);
81 static void virtio_set_hwaddr(struct virtio_hw *hw);
82 static void virtio_get_hwaddr(struct virtio_hw *hw);
84 static void virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
85 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
86 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
87 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
88 uint16_t vlan_id, int on);
89 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
90 struct ether_addr *mac_addr,
91 uint32_t index, uint32_t vmdq __rte_unused);
92 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
93 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
94 struct ether_addr *mac_addr);
96 static int virtio_dev_queue_stats_mapping_set(
97 __rte_unused struct rte_eth_dev *eth_dev,
98 __rte_unused uint16_t queue_id,
99 __rte_unused uint8_t stat_idx,
100 __rte_unused uint8_t is_rx);
103 * The set of PCI devices this driver supports
105 static const struct rte_pci_id pci_id_virtio_map[] = {
107 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
108 #include "rte_pci_dev_ids.h"
110 { .vendor_id = 0, /* sentinel */ },
114 virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
115 int *dlen, int pkt_num)
119 virtio_net_ctrl_ack status = ~0;
120 struct virtio_pmd_ctrl result;
122 ctrl->status = status;
124 if (!(vq && vq->hw->cvq)) {
126 "%s(): Control queue is not supported.",
130 head = vq->vq_desc_head_idx;
132 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
133 "vq->hw->cvq = %p vq = %p",
134 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
136 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
139 memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
140 sizeof(struct virtio_pmd_ctrl));
143 * Format is enforced in qemu code:
144 * One TX packet for header;
145 * At least one TX packet per argument;
146 * One RX packet for ACK.
148 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
149 vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
150 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
152 i = vq->vq_ring.desc[head].next;
154 for (k = 0; k < pkt_num; k++) {
155 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
156 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
157 + sizeof(struct virtio_net_ctrl_hdr)
158 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
159 vq->vq_ring.desc[i].len = dlen[k];
162 i = vq->vq_ring.desc[i].next;
165 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
166 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
167 + sizeof(struct virtio_net_ctrl_hdr);
168 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
171 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
173 vq_update_avail_ring(vq, head);
174 vq_update_avail_idx(vq);
176 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
178 virtqueue_notify(vq);
181 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
186 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
187 uint32_t idx, desc_idx, used_idx;
188 struct vring_used_elem *uep;
190 used_idx = (uint32_t)(vq->vq_used_cons_idx
191 & (vq->vq_nentries - 1));
192 uep = &vq->vq_ring.used->ring[used_idx];
193 idx = (uint32_t) uep->id;
196 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
197 desc_idx = vq->vq_ring.desc[desc_idx].next;
201 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
202 vq->vq_desc_head_idx = idx;
204 vq->vq_used_cons_idx++;
208 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
209 vq->vq_free_cnt, vq->vq_desc_head_idx);
211 memcpy(&result, vq->virtio_net_hdr_mz->addr,
212 sizeof(struct virtio_pmd_ctrl));
214 return result.status;
218 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
220 struct virtio_hw *hw = dev->data->dev_private;
221 struct virtio_pmd_ctrl ctrl;
225 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
226 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
227 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
229 dlen[0] = sizeof(uint16_t);
231 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
233 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
234 "failed, this is too late now...");
242 virtio_dev_queue_release(struct virtqueue *vq) {
243 struct virtio_hw *hw;
247 /* Select and deactivate the queue */
248 VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vq->queue_id);
249 VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN, 0);
251 rte_free(vq->sw_ring);
256 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
259 uint16_t vtpci_queue_idx,
261 unsigned int socket_id,
262 struct virtqueue **pvq)
264 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
265 const struct rte_memzone *mz;
266 unsigned int vq_size, size;
267 struct virtio_hw *hw = dev->data->dev_private;
268 struct virtqueue *vq = NULL;
270 /* Write the virtqueue index to the Queue Select Field */
271 VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vtpci_queue_idx);
272 PMD_INIT_LOG(DEBUG, "selecting queue: %u", vtpci_queue_idx);
275 * Read the virtqueue size from the Queue Size field
276 * Always power of 2 and if 0 virtqueue does not exist
278 vq_size = VIRTIO_READ_REG_2(hw, VIRTIO_PCI_QUEUE_NUM);
279 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
281 PMD_INIT_LOG(ERR, "%s: virtqueue does not exist", __func__);
285 if (!rte_is_power_of_2(vq_size)) {
286 PMD_INIT_LOG(ERR, "%s: virtqueue size is not powerof 2", __func__);
290 if (queue_type == VTNET_RQ) {
291 snprintf(vq_name, sizeof(vq_name), "port%d_rvq%d",
292 dev->data->port_id, queue_idx);
293 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
294 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
295 vq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
296 (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
297 sizeof(vq->sw_ring[0]), RTE_CACHE_LINE_SIZE, socket_id);
298 } else if (queue_type == VTNET_TQ) {
299 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d",
300 dev->data->port_id, queue_idx);
301 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
302 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
303 } else if (queue_type == VTNET_CQ) {
304 snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
306 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
307 vq_size * sizeof(struct vq_desc_extra),
308 RTE_CACHE_LINE_SIZE);
311 PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue", __func__);
314 if (queue_type == VTNET_RQ && vq->sw_ring == NULL) {
315 PMD_INIT_LOG(ERR, "%s: Can not allocate RX soft ring",
322 vq->port_id = dev->data->port_id;
323 vq->queue_id = queue_idx;
324 vq->vq_queue_index = vtpci_queue_idx;
325 vq->vq_nentries = vq_size;
327 if (nb_desc == 0 || nb_desc > vq_size)
329 vq->vq_free_cnt = nb_desc;
332 * Reserve a memzone for vring elements
334 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
335 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
336 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
338 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
339 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
341 if (rte_errno == EEXIST)
342 mz = rte_memzone_lookup(vq_name);
350 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
351 * and only accepts 32 bit page frame number.
352 * Check if the allocated physical memory exceeds 16TB.
354 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
355 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
360 memset(mz->addr, 0, sizeof(mz->len));
362 vq->vq_ring_mem = mz->phys_addr;
363 vq->vq_ring_virt_mem = mz->addr;
364 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
365 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
366 vq->virtio_net_hdr_mz = NULL;
367 vq->virtio_net_hdr_mem = 0;
369 if (queue_type == VTNET_TQ) {
371 * For each xmit packet, allocate a virtio_net_hdr
373 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
374 dev->data->port_id, queue_idx);
375 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
376 vq_size * hw->vtnet_hdr_size,
377 socket_id, 0, RTE_CACHE_LINE_SIZE);
378 if (vq->virtio_net_hdr_mz == NULL) {
379 if (rte_errno == EEXIST)
380 vq->virtio_net_hdr_mz =
381 rte_memzone_lookup(vq_name);
382 if (vq->virtio_net_hdr_mz == NULL) {
387 vq->virtio_net_hdr_mem =
388 vq->virtio_net_hdr_mz->phys_addr;
389 memset(vq->virtio_net_hdr_mz->addr, 0,
390 vq_size * hw->vtnet_hdr_size);
391 } else if (queue_type == VTNET_CQ) {
392 /* Allocate a page for control vq command, data and status */
393 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
395 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
396 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
397 if (vq->virtio_net_hdr_mz == NULL) {
398 if (rte_errno == EEXIST)
399 vq->virtio_net_hdr_mz =
400 rte_memzone_lookup(vq_name);
401 if (vq->virtio_net_hdr_mz == NULL) {
406 vq->virtio_net_hdr_mem =
407 vq->virtio_net_hdr_mz->phys_addr;
408 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
412 * Set guest physical address of the virtqueue
413 * in VIRTIO_PCI_QUEUE_PFN config register of device
415 VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN,
416 mz->phys_addr >> VIRTIO_PCI_QUEUE_ADDR_SHIFT);
422 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
425 struct virtqueue *vq;
427 struct virtio_hw *hw = dev->data->dev_private;
429 PMD_INIT_FUNC_TRACE();
430 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
431 vtpci_queue_idx, 0, socket_id, &vq);
433 PMD_INIT_LOG(ERR, "control vq initialization failed");
442 virtio_free_queues(struct rte_eth_dev *dev)
446 for (i = 0; i < dev->data->nb_rx_queues; i++)
447 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
449 dev->data->nb_rx_queues = 0;
451 for (i = 0; i < dev->data->nb_tx_queues; i++)
452 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
454 dev->data->nb_tx_queues = 0;
458 virtio_dev_close(struct rte_eth_dev *dev)
460 struct virtio_hw *hw = dev->data->dev_private;
461 struct rte_pci_device *pci_dev = dev->pci_dev;
463 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
466 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
467 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
470 virtio_dev_free_mbufs(dev);
471 virtio_free_queues(dev);
475 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
477 struct virtio_hw *hw = dev->data->dev_private;
478 struct virtio_pmd_ctrl ctrl;
482 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
483 PMD_INIT_LOG(INFO, "host does not support rx control\n");
487 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
488 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
492 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
494 PMD_INIT_LOG(ERR, "Failed to enable promisc");
498 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
500 struct virtio_hw *hw = dev->data->dev_private;
501 struct virtio_pmd_ctrl ctrl;
505 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
506 PMD_INIT_LOG(INFO, "host does not support rx control\n");
510 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
511 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
515 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
517 PMD_INIT_LOG(ERR, "Failed to disable promisc");
521 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
523 struct virtio_hw *hw = dev->data->dev_private;
524 struct virtio_pmd_ctrl ctrl;
528 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
529 PMD_INIT_LOG(INFO, "host does not support rx control\n");
533 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
534 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
538 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
540 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
544 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
546 struct virtio_hw *hw = dev->data->dev_private;
547 struct virtio_pmd_ctrl ctrl;
551 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
552 PMD_INIT_LOG(INFO, "host does not support rx control\n");
556 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
557 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
561 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
563 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
567 * dev_ops for virtio, bare necessities for basic operation
569 static const struct eth_dev_ops virtio_eth_dev_ops = {
570 .dev_configure = virtio_dev_configure,
571 .dev_start = virtio_dev_start,
572 .dev_stop = virtio_dev_stop,
573 .dev_close = virtio_dev_close,
574 .promiscuous_enable = virtio_dev_promiscuous_enable,
575 .promiscuous_disable = virtio_dev_promiscuous_disable,
576 .allmulticast_enable = virtio_dev_allmulticast_enable,
577 .allmulticast_disable = virtio_dev_allmulticast_disable,
579 .dev_infos_get = virtio_dev_info_get,
580 .stats_get = virtio_dev_stats_get,
581 .stats_reset = virtio_dev_stats_reset,
582 .link_update = virtio_dev_link_update,
583 .rx_queue_setup = virtio_dev_rx_queue_setup,
584 .rx_queue_release = virtio_dev_rx_queue_release,
585 .tx_queue_setup = virtio_dev_tx_queue_setup,
586 .tx_queue_release = virtio_dev_tx_queue_release,
587 /* collect stats per queue */
588 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
589 .vlan_filter_set = virtio_vlan_filter_set,
590 .mac_addr_add = virtio_mac_addr_add,
591 .mac_addr_remove = virtio_mac_addr_remove,
592 .mac_addr_set = virtio_mac_addr_set,
596 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
597 struct rte_eth_link *link)
599 struct rte_eth_link *dst = link;
600 struct rte_eth_link *src = &(dev->data->dev_link);
602 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
603 *(uint64_t *)src) == 0)
610 * Atomically writes the link status information into global
611 * structure rte_eth_dev.
614 * - Pointer to the structure rte_eth_dev to read from.
615 * - Pointer to the buffer to be saved with the link status.
618 * - On success, zero.
619 * - On failure, negative value.
622 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
623 struct rte_eth_link *link)
625 struct rte_eth_link *dst = &(dev->data->dev_link);
626 struct rte_eth_link *src = link;
628 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
629 *(uint64_t *)src) == 0)
636 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
640 for (i = 0; i < dev->data->nb_tx_queues; i++) {
641 const struct virtqueue *txvq = dev->data->tx_queues[i];
645 stats->opackets += txvq->packets;
646 stats->obytes += txvq->bytes;
647 stats->oerrors += txvq->errors;
649 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
650 stats->q_opackets[i] = txvq->packets;
651 stats->q_obytes[i] = txvq->bytes;
655 for (i = 0; i < dev->data->nb_rx_queues; i++) {
656 const struct virtqueue *rxvq = dev->data->rx_queues[i];
660 stats->ipackets += rxvq->packets;
661 stats->ibytes += rxvq->bytes;
662 stats->ierrors += rxvq->errors;
664 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
665 stats->q_ipackets[i] = rxvq->packets;
666 stats->q_ibytes[i] = rxvq->bytes;
670 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
674 virtio_dev_stats_reset(struct rte_eth_dev *dev)
678 for (i = 0; i < dev->data->nb_tx_queues; i++) {
679 struct virtqueue *txvq = dev->data->tx_queues[i];
688 for (i = 0; i < dev->data->nb_rx_queues; i++) {
689 struct virtqueue *rxvq = dev->data->rx_queues[i];
698 dev->data->rx_mbuf_alloc_failed = 0;
702 virtio_set_hwaddr(struct virtio_hw *hw)
704 vtpci_write_dev_config(hw,
705 offsetof(struct virtio_net_config, mac),
706 &hw->mac_addr, ETHER_ADDR_LEN);
710 virtio_get_hwaddr(struct virtio_hw *hw)
712 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
713 vtpci_read_dev_config(hw,
714 offsetof(struct virtio_net_config, mac),
715 &hw->mac_addr, ETHER_ADDR_LEN);
717 eth_random_addr(&hw->mac_addr[0]);
718 virtio_set_hwaddr(hw);
723 virtio_mac_table_set(struct virtio_hw *hw,
724 const struct virtio_net_ctrl_mac *uc,
725 const struct virtio_net_ctrl_mac *mc)
727 struct virtio_pmd_ctrl ctrl;
730 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
731 PMD_DRV_LOG(INFO, "host does not support mac table\n");
735 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
736 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
738 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
739 memcpy(ctrl.data, uc, len[0]);
741 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
742 memcpy(ctrl.data + len[0], mc, len[1]);
744 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
746 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
750 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
751 uint32_t index, uint32_t vmdq __rte_unused)
753 struct virtio_hw *hw = dev->data->dev_private;
754 const struct ether_addr *addrs = dev->data->mac_addrs;
756 struct virtio_net_ctrl_mac *uc, *mc;
758 if (index >= VIRTIO_MAX_MAC_ADDRS) {
759 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
763 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
765 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
768 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
769 const struct ether_addr *addr
770 = (i == index) ? mac_addr : addrs + i;
771 struct virtio_net_ctrl_mac *tbl
772 = is_multicast_ether_addr(addr) ? mc : uc;
774 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
777 virtio_mac_table_set(hw, uc, mc);
781 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
783 struct virtio_hw *hw = dev->data->dev_private;
784 struct ether_addr *addrs = dev->data->mac_addrs;
785 struct virtio_net_ctrl_mac *uc, *mc;
788 if (index >= VIRTIO_MAX_MAC_ADDRS) {
789 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
793 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
795 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
798 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
799 struct virtio_net_ctrl_mac *tbl;
801 if (i == index || is_zero_ether_addr(addrs + i))
804 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
805 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
808 virtio_mac_table_set(hw, uc, mc);
812 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
814 struct virtio_hw *hw = dev->data->dev_private;
816 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
818 /* Use atomic update if available */
819 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
820 struct virtio_pmd_ctrl ctrl;
821 int len = ETHER_ADDR_LEN;
823 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
824 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
826 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
827 virtio_send_command(hw->cvq, &ctrl, &len, 1);
828 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
829 virtio_set_hwaddr(hw);
833 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
835 struct virtio_hw *hw = dev->data->dev_private;
836 struct virtio_pmd_ctrl ctrl;
839 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
842 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
843 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
844 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
845 len = sizeof(vlan_id);
847 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
851 virtio_negotiate_features(struct virtio_hw *hw)
853 uint32_t host_features;
855 /* Prepare guest_features: feature that driver wants to support */
856 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
857 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %x",
860 /* Read device(host) feature bits */
861 host_features = VIRTIO_READ_REG_4(hw, VIRTIO_PCI_HOST_FEATURES);
862 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %x",
866 * Negotiate features: Subset of device feature bits are written back
867 * guest feature bits.
869 hw->guest_features = vtpci_negotiate_features(hw, host_features);
870 PMD_INIT_LOG(DEBUG, "features after negotiate = %x",
874 #ifdef RTE_EXEC_ENV_LINUXAPP
876 parse_sysfs_value(const char *filename, unsigned long *val)
882 f = fopen(filename, "r");
884 PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
889 if (fgets(buf, sizeof(buf), f) == NULL) {
890 PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
895 *val = strtoul(buf, &end, 0);
896 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
897 PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
906 static int get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
907 unsigned int *uio_num)
911 char dirname[PATH_MAX];
913 /* depending on kernel version, uio can be located in uio/uioX
915 snprintf(dirname, sizeof(dirname),
916 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
917 loc->domain, loc->bus, loc->devid, loc->function);
918 dir = opendir(dirname);
920 /* retry with the parent directory */
921 snprintf(dirname, sizeof(dirname),
922 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
923 loc->domain, loc->bus, loc->devid, loc->function);
924 dir = opendir(dirname);
927 PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
932 /* take the first file starting with "uio" */
933 while ((e = readdir(dir)) != NULL) {
934 /* format could be uio%d ...*/
935 int shortprefix_len = sizeof("uio") - 1;
936 /* ... or uio:uio%d */
937 int longprefix_len = sizeof("uio:uio") - 1;
940 if (strncmp(e->d_name, "uio", 3) != 0)
943 /* first try uio%d */
945 *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
946 if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
947 snprintf(buf, buflen, "%s/uio%u", dirname, *uio_num);
951 /* then try uio:uio%d */
953 *uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
954 if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
955 snprintf(buf, buflen, "%s/uio:uio%u", dirname,
962 /* No uio resource found */
964 PMD_INIT_LOG(ERR, "Could not find uio resource");
972 virtio_has_msix(const struct rte_pci_addr *loc)
975 char dirname[PATH_MAX];
977 snprintf(dirname, sizeof(dirname),
978 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
979 loc->domain, loc->bus, loc->devid, loc->function);
981 d = opendir(dirname);
988 /* Extract I/O port numbers from sysfs */
989 static int virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
991 char dirname[PATH_MAX];
992 char filename[PATH_MAX];
993 unsigned long start, size;
994 unsigned int uio_num;
996 if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
999 /* get portio size */
1000 snprintf(filename, sizeof(filename),
1001 "%s/portio/port0/size", dirname);
1002 if (parse_sysfs_value(filename, &size) < 0) {
1003 PMD_INIT_LOG(ERR, "%s(): cannot parse size",
1008 /* get portio start */
1009 snprintf(filename, sizeof(filename),
1010 "%s/portio/port0/start", dirname);
1011 if (parse_sysfs_value(filename, &start) < 0) {
1012 PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
1016 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
1017 pci_dev->mem_resource[0].len = (uint64_t)size;
1019 "PCI Port IO found start=0x%lx with size=0x%lx",
1023 memset(dirname, 0, sizeof(dirname));
1024 snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
1025 pci_dev->intr_handle.fd = open(dirname, O_RDWR);
1026 if (pci_dev->intr_handle.fd < 0) {
1027 PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
1028 dirname, strerror(errno));
1032 pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
1033 pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
1038 /* Extract port I/O numbers from proc/ioports */
1039 static int virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
1041 uint16_t start, end;
1049 snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
1050 pci_dev->addr.domain,
1052 pci_dev->addr.devid,
1053 pci_dev->addr.function);
1055 fp = fopen("/proc/ioports", "r");
1057 PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
1061 while (getdelim(&line, &linesz, '\n', fp) > 0) {
1066 n = strcspn(ptr, ":");
1070 while (*left && isspace(*left))
1073 if (!strncmp(left, pci_id, strlen(pci_id))) {
1076 while (*ptr && isspace(*ptr))
1079 sscanf(ptr, "%04hx-%04hx", &start, &end);
1080 size = end - start + 1;
1092 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
1093 pci_dev->mem_resource[0].len = (uint64_t)size;
1095 "PCI Port IO found start=0x%x with size=0x%x",
1098 /* can't support lsc interrupt without uio */
1099 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1104 /* Extract I/O port numbers from sysfs */
1105 static int virtio_resource_init(struct rte_pci_device *pci_dev)
1107 if (virtio_resource_init_by_uio(pci_dev) == 0)
1110 return virtio_resource_init_by_ioports(pci_dev);
1115 virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
1117 /* nic_uio does not enable interrupts, return 0 (false). */
1121 static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
1123 /* no setup required */
1129 * Process Virtio Config changed interrupt and call the callback
1130 * if link state changed.
1133 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1136 struct rte_eth_dev *dev = param;
1137 struct virtio_hw *hw = dev->data->dev_private;
1140 /* Read interrupt status which clears interrupt */
1141 isr = vtpci_isr(hw);
1142 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1144 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1145 PMD_DRV_LOG(ERR, "interrupt enable failed");
1147 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1148 if (virtio_dev_link_update(dev, 0) == 0)
1149 _rte_eth_dev_callback_process(dev,
1150 RTE_ETH_EVENT_INTR_LSC);
1156 rx_func_get(struct rte_eth_dev *eth_dev)
1158 struct virtio_hw *hw = eth_dev->data->dev_private;
1159 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1160 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1162 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1166 * This function is based on probe() function in virtio_pci.c
1167 * It returns 0 on success.
1170 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1172 struct virtio_hw *hw = eth_dev->data->dev_private;
1173 struct virtio_net_config *config;
1174 struct virtio_net_config local_config;
1175 struct rte_pci_device *pci_dev;
1177 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
1179 eth_dev->dev_ops = &virtio_eth_dev_ops;
1180 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1182 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1183 rx_func_get(eth_dev);
1187 /* Allocate memory for storing MAC addresses */
1188 eth_dev->data->mac_addrs = rte_zmalloc("virtio", ETHER_ADDR_LEN, 0);
1189 if (eth_dev->data->mac_addrs == NULL) {
1191 "Failed to allocate %d bytes needed to store MAC addresses",
1196 pci_dev = eth_dev->pci_dev;
1197 if (virtio_resource_init(pci_dev) < 0)
1200 hw->use_msix = virtio_has_msix(&pci_dev->addr);
1201 hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
1203 /* Reset the device although not necessary at startup */
1206 /* Tell the host we've noticed this device. */
1207 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1209 /* Tell the host we've known how to drive the device. */
1210 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1211 virtio_negotiate_features(hw);
1213 /* If host does not support status then disable LSC */
1214 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1215 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1217 rx_func_get(eth_dev);
1219 /* Setting up rx_header size for the device */
1220 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1221 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1223 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1225 /* Copy the permanent MAC address to: virtio_hw */
1226 virtio_get_hwaddr(hw);
1227 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1228 ð_dev->data->mac_addrs[0]);
1230 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1231 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1232 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1234 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1235 config = &local_config;
1237 vtpci_read_dev_config(hw,
1238 offsetof(struct virtio_net_config, mac),
1239 &config->mac, sizeof(config->mac));
1241 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1242 vtpci_read_dev_config(hw,
1243 offsetof(struct virtio_net_config, status),
1244 &config->status, sizeof(config->status));
1247 "VIRTIO_NET_F_STATUS is not supported");
1251 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1252 vtpci_read_dev_config(hw,
1253 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1254 &config->max_virtqueue_pairs,
1255 sizeof(config->max_virtqueue_pairs));
1258 "VIRTIO_NET_F_MQ is not supported");
1259 config->max_virtqueue_pairs = 1;
1263 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1264 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1266 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1267 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1269 virtio_dev_cq_queue_setup(eth_dev,
1270 config->max_virtqueue_pairs * 2,
1273 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1274 config->max_virtqueue_pairs);
1275 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1277 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1278 config->mac[0], config->mac[1],
1279 config->mac[2], config->mac[3],
1280 config->mac[4], config->mac[5]);
1282 hw->max_rx_queues = 1;
1283 hw->max_tx_queues = 1;
1286 eth_dev->data->nb_rx_queues = hw->max_rx_queues;
1287 eth_dev->data->nb_tx_queues = hw->max_tx_queues;
1289 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1290 hw->max_rx_queues, hw->max_tx_queues);
1291 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1292 eth_dev->data->port_id, pci_dev->id.vendor_id,
1293 pci_dev->id.device_id);
1295 /* Setup interrupt callback */
1296 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1297 rte_intr_callback_register(&pci_dev->intr_handle,
1298 virtio_interrupt_handler, eth_dev);
1300 virtio_dev_cq_start(eth_dev);
1306 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1308 struct rte_pci_device *pci_dev;
1309 struct virtio_hw *hw = eth_dev->data->dev_private;
1311 PMD_INIT_FUNC_TRACE();
1313 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1316 if (hw->started == 1) {
1317 virtio_dev_stop(eth_dev);
1318 virtio_dev_close(eth_dev);
1320 pci_dev = eth_dev->pci_dev;
1322 eth_dev->dev_ops = NULL;
1323 eth_dev->tx_pkt_burst = NULL;
1324 eth_dev->rx_pkt_burst = NULL;
1326 virtio_dev_queue_release(hw->cvq);
1328 rte_free(eth_dev->data->mac_addrs);
1329 eth_dev->data->mac_addrs = NULL;
1331 /* reset interrupt callback */
1332 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1333 rte_intr_callback_unregister(&pci_dev->intr_handle,
1334 virtio_interrupt_handler,
1337 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1342 static struct eth_driver rte_virtio_pmd = {
1344 .name = "rte_virtio_pmd",
1345 .id_table = pci_id_virtio_map,
1346 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1348 .eth_dev_init = eth_virtio_dev_init,
1349 .eth_dev_uninit = eth_virtio_dev_uninit,
1350 .dev_private_size = sizeof(struct virtio_hw),
1354 * Driver initialization routine.
1355 * Invoked once at EAL init time.
1356 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1357 * Returns 0 on success.
1360 rte_virtio_pmd_init(const char *name __rte_unused,
1361 const char *param __rte_unused)
1363 if (rte_eal_iopl_init() != 0) {
1364 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1368 rte_eth_driver_register(&rte_virtio_pmd);
1373 * Configure virtio device
1374 * It returns 0 on success.
1377 virtio_dev_configure(struct rte_eth_dev *dev)
1379 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1380 struct virtio_hw *hw = dev->data->dev_private;
1381 struct rte_pci_device *pci_dev = dev->pci_dev;
1383 PMD_INIT_LOG(DEBUG, "configure");
1385 if (rxmode->hw_ip_checksum) {
1386 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1390 hw->vlan_strip = rxmode->hw_vlan_strip;
1392 if (rxmode->hw_vlan_filter
1393 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1395 "vlan filtering not available on this host");
1399 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1400 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1401 PMD_DRV_LOG(ERR, "failed to set config vector");
1410 virtio_dev_start(struct rte_eth_dev *dev)
1412 uint16_t nb_queues, i;
1413 struct virtio_hw *hw = dev->data->dev_private;
1414 struct rte_pci_device *pci_dev = dev->pci_dev;
1416 /* check if lsc interrupt feature is enabled */
1417 if (dev->data->dev_conf.intr_conf.lsc) {
1418 if (!(pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
1419 PMD_DRV_LOG(ERR, "link status not supported by host");
1423 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1424 PMD_DRV_LOG(ERR, "interrupt enable failed");
1429 /* Initialize Link state */
1430 virtio_dev_link_update(dev, 0);
1432 /* On restart after stop do not touch queues */
1436 /* Do final configuration before rx/tx engine starts */
1437 virtio_dev_rxtx_start(dev);
1438 vtpci_reinit_complete(hw);
1442 /*Notify the backend
1443 *Otherwise the tap backend might already stop its queue due to fullness.
1444 *vhost backend will have no chance to be waked up
1446 nb_queues = dev->data->nb_rx_queues;
1447 if (nb_queues > 1) {
1448 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1452 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1454 for (i = 0; i < nb_queues; i++)
1455 virtqueue_notify(dev->data->rx_queues[i]);
1457 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1459 for (i = 0; i < dev->data->nb_rx_queues; i++)
1460 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1462 for (i = 0; i < dev->data->nb_tx_queues; i++)
1463 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1468 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1470 struct rte_mbuf *buf;
1471 int i, mbuf_num = 0;
1473 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1475 "Before freeing rxq[%d] used and unused buf", i);
1476 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1478 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1479 i, dev->data->rx_queues[i]);
1480 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1481 dev->data->rx_queues[i])) != NULL) {
1482 rte_pktmbuf_free(buf);
1486 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1488 "After freeing rxq[%d] used and unused buf", i);
1489 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1492 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1494 "Before freeing txq[%d] used and unused bufs",
1496 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1499 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1500 dev->data->tx_queues[i])) != NULL) {
1501 rte_pktmbuf_free(buf);
1506 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1508 "After freeing txq[%d] used and unused buf", i);
1509 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1514 * Stop device: disable interrupt and mark link down
1517 virtio_dev_stop(struct rte_eth_dev *dev)
1519 struct rte_eth_link link;
1521 PMD_INIT_LOG(DEBUG, "stop");
1523 if (dev->data->dev_conf.intr_conf.lsc)
1524 rte_intr_disable(&dev->pci_dev->intr_handle);
1526 memset(&link, 0, sizeof(link));
1527 virtio_dev_atomic_write_link_status(dev, &link);
1531 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1533 struct rte_eth_link link, old;
1535 struct virtio_hw *hw = dev->data->dev_private;
1536 memset(&link, 0, sizeof(link));
1537 virtio_dev_atomic_read_link_status(dev, &link);
1539 link.link_duplex = FULL_DUPLEX;
1540 link.link_speed = SPEED_10G;
1542 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1543 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1544 vtpci_read_dev_config(hw,
1545 offsetof(struct virtio_net_config, status),
1546 &status, sizeof(status));
1547 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1548 link.link_status = 0;
1549 PMD_INIT_LOG(DEBUG, "Port %d is down",
1550 dev->data->port_id);
1552 link.link_status = 1;
1553 PMD_INIT_LOG(DEBUG, "Port %d is up",
1554 dev->data->port_id);
1557 link.link_status = 1; /* Link up */
1559 virtio_dev_atomic_write_link_status(dev, &link);
1561 return (old.link_status == link.link_status) ? -1 : 0;
1565 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1567 struct virtio_hw *hw = dev->data->dev_private;
1569 dev_info->driver_name = dev->driver->pci_drv.name;
1570 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1571 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1572 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1573 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1574 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1575 dev_info->default_txconf = (struct rte_eth_txconf) {
1576 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1581 * It enables testpmd to collect per queue stats.
1584 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1585 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1586 __rte_unused uint8_t is_rx)
1591 static struct rte_driver rte_virtio_driver = {
1593 .init = rte_virtio_pmd_init,
1596 PMD_REGISTER_DRIVER(rte_virtio_driver);