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.
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"
66 static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
67 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
68 static int virtio_dev_configure(struct rte_eth_dev *dev);
69 static int virtio_dev_start(struct rte_eth_dev *dev);
70 static void virtio_dev_stop(struct rte_eth_dev *dev);
71 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
72 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
73 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
74 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
75 static void virtio_dev_info_get(struct rte_eth_dev *dev,
76 struct rte_eth_dev_info *dev_info);
77 static int virtio_dev_link_update(struct rte_eth_dev *dev,
78 __rte_unused int wait_to_complete);
80 static void virtio_set_hwaddr(struct virtio_hw *hw);
81 static void virtio_get_hwaddr(struct virtio_hw *hw);
83 static void virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
84 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
85 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
86 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
87 uint16_t vlan_id, int on);
88 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
89 struct ether_addr *mac_addr,
90 uint32_t index, uint32_t vmdq __rte_unused);
91 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
92 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
93 struct ether_addr *mac_addr);
95 static int virtio_dev_queue_stats_mapping_set(
96 __rte_unused struct rte_eth_dev *eth_dev,
97 __rte_unused uint16_t queue_id,
98 __rte_unused uint8_t stat_idx,
99 __rte_unused uint8_t is_rx);
102 * The set of PCI devices this driver supports
104 static const struct rte_pci_id pci_id_virtio_map[] = {
106 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
107 #include "rte_pci_dev_ids.h"
109 { .vendor_id = 0, /* sentinel */ },
113 virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
114 int *dlen, int pkt_num)
118 virtio_net_ctrl_ack status = ~0;
119 struct virtio_pmd_ctrl result;
121 ctrl->status = status;
123 if (!(vq && vq->hw->cvq)) {
125 "%s(): Control queue is not supported.",
129 head = vq->vq_desc_head_idx;
131 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
132 "vq->hw->cvq = %p vq = %p",
133 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
135 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
138 memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
139 sizeof(struct virtio_pmd_ctrl));
142 * Format is enforced in qemu code:
143 * One TX packet for header;
144 * At least one TX packet per argument;
145 * One RX packet for ACK.
147 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
148 vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
149 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
151 i = vq->vq_ring.desc[head].next;
153 for (k = 0; k < pkt_num; k++) {
154 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
155 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
156 + sizeof(struct virtio_net_ctrl_hdr)
157 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
158 vq->vq_ring.desc[i].len = dlen[k];
161 i = vq->vq_ring.desc[i].next;
164 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
165 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
166 + sizeof(struct virtio_net_ctrl_hdr);
167 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
170 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
172 vq_update_avail_ring(vq, head);
173 vq_update_avail_idx(vq);
175 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
177 virtqueue_notify(vq);
180 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
185 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
186 uint32_t idx, desc_idx, used_idx;
187 struct vring_used_elem *uep;
189 used_idx = (uint32_t)(vq->vq_used_cons_idx
190 & (vq->vq_nentries - 1));
191 uep = &vq->vq_ring.used->ring[used_idx];
192 idx = (uint32_t) uep->id;
195 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
196 desc_idx = vq->vq_ring.desc[desc_idx].next;
200 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
201 vq->vq_desc_head_idx = idx;
203 vq->vq_used_cons_idx++;
207 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
208 vq->vq_free_cnt, vq->vq_desc_head_idx);
210 memcpy(&result, vq->virtio_net_hdr_mz->addr,
211 sizeof(struct virtio_pmd_ctrl));
213 return result.status;
217 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
219 struct virtio_hw *hw = dev->data->dev_private;
220 struct virtio_pmd_ctrl ctrl;
224 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
225 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
226 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
228 dlen[0] = sizeof(uint16_t);
230 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
232 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
233 "failed, this is too late now...");
241 virtio_dev_queue_release(struct virtqueue *vq) {
242 struct virtio_hw *hw = vq->hw;
245 /* Select and deactivate the queue */
246 VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vq->queue_id);
247 VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN, 0);
254 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
257 uint16_t vtpci_queue_idx,
259 unsigned int socket_id,
260 struct virtqueue **pvq)
262 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
263 const struct rte_memzone *mz;
266 struct virtio_hw *hw = dev->data->dev_private;
267 struct virtqueue *vq = NULL;
269 /* Write the virtqueue index to the Queue Select Field */
270 VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vtpci_queue_idx);
271 PMD_INIT_LOG(DEBUG, "selecting queue: %d", vtpci_queue_idx);
274 * Read the virtqueue size from the Queue Size field
275 * Always power of 2 and if 0 virtqueue does not exist
277 vq_size = VIRTIO_READ_REG_2(hw, VIRTIO_PCI_QUEUE_NUM);
278 PMD_INIT_LOG(DEBUG, "vq_size: %d nb_desc:%d", vq_size, nb_desc);
280 PMD_INIT_LOG(ERR, "%s: virtqueue does not exist", __func__);
284 if (!rte_is_power_of_2(vq_size)) {
285 PMD_INIT_LOG(ERR, "%s: virtqueue size is not powerof 2", __func__);
289 if (queue_type == VTNET_RQ) {
290 snprintf(vq_name, sizeof(vq_name), "port%d_rvq%d",
291 dev->data->port_id, queue_idx);
292 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
293 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
294 } else if (queue_type == VTNET_TQ) {
295 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d",
296 dev->data->port_id, queue_idx);
297 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
298 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
299 } else if (queue_type == VTNET_CQ) {
300 snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
302 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
303 vq_size * sizeof(struct vq_desc_extra),
304 RTE_CACHE_LINE_SIZE);
307 PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue", __func__);
312 vq->port_id = dev->data->port_id;
313 vq->queue_id = queue_idx;
314 vq->vq_queue_index = vtpci_queue_idx;
315 vq->vq_nentries = vq_size;
317 if (nb_desc == 0 || nb_desc > vq_size)
319 vq->vq_free_cnt = nb_desc;
322 * Reserve a memzone for vring elements
324 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
325 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
326 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
328 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
329 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
331 if (rte_errno == EEXIST)
332 mz = rte_memzone_lookup(vq_name);
340 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
341 * and only accepts 32 bit page frame number.
342 * Check if the allocated physical memory exceeds 16TB.
344 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
345 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
350 memset(mz->addr, 0, sizeof(mz->len));
352 vq->vq_ring_mem = mz->phys_addr;
353 vq->vq_ring_virt_mem = mz->addr;
354 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
355 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
356 vq->virtio_net_hdr_mz = NULL;
357 vq->virtio_net_hdr_mem = 0;
359 if (queue_type == VTNET_TQ) {
361 * For each xmit packet, allocate a virtio_net_hdr
363 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
364 dev->data->port_id, queue_idx);
365 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
366 vq_size * hw->vtnet_hdr_size,
367 socket_id, 0, RTE_CACHE_LINE_SIZE);
368 if (vq->virtio_net_hdr_mz == NULL) {
369 if (rte_errno == EEXIST)
370 vq->virtio_net_hdr_mz =
371 rte_memzone_lookup(vq_name);
372 if (vq->virtio_net_hdr_mz == NULL) {
377 vq->virtio_net_hdr_mem =
378 vq->virtio_net_hdr_mz->phys_addr;
379 memset(vq->virtio_net_hdr_mz->addr, 0,
380 vq_size * hw->vtnet_hdr_size);
381 } else if (queue_type == VTNET_CQ) {
382 /* Allocate a page for control vq command, data and status */
383 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
385 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
386 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
387 if (vq->virtio_net_hdr_mz == NULL) {
388 if (rte_errno == EEXIST)
389 vq->virtio_net_hdr_mz =
390 rte_memzone_lookup(vq_name);
391 if (vq->virtio_net_hdr_mz == NULL) {
396 vq->virtio_net_hdr_mem =
397 vq->virtio_net_hdr_mz->phys_addr;
398 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
402 * Set guest physical address of the virtqueue
403 * in VIRTIO_PCI_QUEUE_PFN config register of device
405 VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN,
406 mz->phys_addr >> VIRTIO_PCI_QUEUE_ADDR_SHIFT);
412 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
415 struct virtqueue *vq;
416 uint16_t nb_desc = 0;
418 struct virtio_hw *hw = dev->data->dev_private;
420 PMD_INIT_FUNC_TRACE();
421 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
422 vtpci_queue_idx, nb_desc, socket_id, &vq);
424 PMD_INIT_LOG(ERR, "control vq initialization failed");
433 virtio_free_queues(struct rte_eth_dev *dev)
437 for (i = 0; i < dev->data->nb_rx_queues; i++)
438 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
440 dev->data->nb_rx_queues = 0;
442 for (i = 0; i < dev->data->nb_tx_queues; i++)
443 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
445 dev->data->nb_tx_queues = 0;
449 virtio_dev_close(struct rte_eth_dev *dev)
451 struct virtio_hw *hw = dev->data->dev_private;
452 struct rte_pci_device *pci_dev = dev->pci_dev;
454 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
457 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
458 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
461 virtio_dev_free_mbufs(dev);
462 virtio_free_queues(dev);
466 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
468 struct virtio_hw *hw = dev->data->dev_private;
469 struct virtio_pmd_ctrl ctrl;
473 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
474 PMD_INIT_LOG(INFO, "host does not support rx control\n");
478 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
479 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
483 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
485 PMD_INIT_LOG(ERR, "Failed to enable promisc");
489 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
491 struct virtio_hw *hw = dev->data->dev_private;
492 struct virtio_pmd_ctrl ctrl;
496 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
497 PMD_INIT_LOG(INFO, "host does not support rx control\n");
501 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
502 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
506 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
508 PMD_INIT_LOG(ERR, "Failed to disable promisc");
512 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
514 struct virtio_hw *hw = dev->data->dev_private;
515 struct virtio_pmd_ctrl ctrl;
519 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
520 PMD_INIT_LOG(INFO, "host does not support rx control\n");
524 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
525 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
529 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
531 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
535 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
537 struct virtio_hw *hw = dev->data->dev_private;
538 struct virtio_pmd_ctrl ctrl;
542 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
543 PMD_INIT_LOG(INFO, "host does not support rx control\n");
547 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
548 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
552 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
554 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
558 * dev_ops for virtio, bare necessities for basic operation
560 static const struct eth_dev_ops virtio_eth_dev_ops = {
561 .dev_configure = virtio_dev_configure,
562 .dev_start = virtio_dev_start,
563 .dev_stop = virtio_dev_stop,
564 .dev_close = virtio_dev_close,
565 .promiscuous_enable = virtio_dev_promiscuous_enable,
566 .promiscuous_disable = virtio_dev_promiscuous_disable,
567 .allmulticast_enable = virtio_dev_allmulticast_enable,
568 .allmulticast_disable = virtio_dev_allmulticast_disable,
570 .dev_infos_get = virtio_dev_info_get,
571 .stats_get = virtio_dev_stats_get,
572 .stats_reset = virtio_dev_stats_reset,
573 .link_update = virtio_dev_link_update,
574 .rx_queue_setup = virtio_dev_rx_queue_setup,
575 .rx_queue_release = virtio_dev_rx_queue_release,
576 .tx_queue_setup = virtio_dev_tx_queue_setup,
577 .tx_queue_release = virtio_dev_tx_queue_release,
578 /* collect stats per queue */
579 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
580 .vlan_filter_set = virtio_vlan_filter_set,
581 .mac_addr_add = virtio_mac_addr_add,
582 .mac_addr_remove = virtio_mac_addr_remove,
583 .mac_addr_set = virtio_mac_addr_set,
587 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
588 struct rte_eth_link *link)
590 struct rte_eth_link *dst = link;
591 struct rte_eth_link *src = &(dev->data->dev_link);
593 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
594 *(uint64_t *)src) == 0)
601 * Atomically writes the link status information into global
602 * structure rte_eth_dev.
605 * - Pointer to the structure rte_eth_dev to read from.
606 * - Pointer to the buffer to be saved with the link status.
609 * - On success, zero.
610 * - On failure, negative value.
613 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
614 struct rte_eth_link *link)
616 struct rte_eth_link *dst = &(dev->data->dev_link);
617 struct rte_eth_link *src = link;
619 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
620 *(uint64_t *)src) == 0)
627 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
631 for (i = 0; i < dev->data->nb_tx_queues; i++) {
632 const struct virtqueue *txvq = dev->data->tx_queues[i];
636 stats->opackets += txvq->packets;
637 stats->obytes += txvq->bytes;
638 stats->oerrors += txvq->errors;
640 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
641 stats->q_opackets[i] = txvq->packets;
642 stats->q_obytes[i] = txvq->bytes;
646 for (i = 0; i < dev->data->nb_rx_queues; i++) {
647 const struct virtqueue *rxvq = dev->data->rx_queues[i];
651 stats->ipackets += rxvq->packets;
652 stats->ibytes += rxvq->bytes;
653 stats->ierrors += rxvq->errors;
655 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
656 stats->q_ipackets[i] = rxvq->packets;
657 stats->q_ibytes[i] = rxvq->bytes;
661 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
665 virtio_dev_stats_reset(struct rte_eth_dev *dev)
669 for (i = 0; i < dev->data->nb_tx_queues; i++) {
670 struct virtqueue *txvq = dev->data->tx_queues[i];
679 for (i = 0; i < dev->data->nb_rx_queues; i++) {
680 struct virtqueue *rxvq = dev->data->rx_queues[i];
689 dev->data->rx_mbuf_alloc_failed = 0;
693 virtio_set_hwaddr(struct virtio_hw *hw)
695 vtpci_write_dev_config(hw,
696 offsetof(struct virtio_net_config, mac),
697 &hw->mac_addr, ETHER_ADDR_LEN);
701 virtio_get_hwaddr(struct virtio_hw *hw)
703 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
704 vtpci_read_dev_config(hw,
705 offsetof(struct virtio_net_config, mac),
706 &hw->mac_addr, ETHER_ADDR_LEN);
708 eth_random_addr(&hw->mac_addr[0]);
709 virtio_set_hwaddr(hw);
714 virtio_mac_table_set(struct virtio_hw *hw,
715 const struct virtio_net_ctrl_mac *uc,
716 const struct virtio_net_ctrl_mac *mc)
718 struct virtio_pmd_ctrl ctrl;
721 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
722 PMD_DRV_LOG(INFO, "host does not support mac table\n");
726 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
727 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
729 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
730 memcpy(ctrl.data, uc, len[0]);
732 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
733 memcpy(ctrl.data + len[0], mc, len[1]);
735 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
737 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
741 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
742 uint32_t index, uint32_t vmdq __rte_unused)
744 struct virtio_hw *hw = dev->data->dev_private;
745 const struct ether_addr *addrs = dev->data->mac_addrs;
747 struct virtio_net_ctrl_mac *uc, *mc;
749 if (index >= VIRTIO_MAX_MAC_ADDRS) {
750 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
754 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
756 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
759 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
760 const struct ether_addr *addr
761 = (i == index) ? mac_addr : addrs + i;
762 struct virtio_net_ctrl_mac *tbl
763 = is_multicast_ether_addr(addr) ? mc : uc;
765 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
768 virtio_mac_table_set(hw, uc, mc);
772 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
774 struct virtio_hw *hw = dev->data->dev_private;
775 struct ether_addr *addrs = dev->data->mac_addrs;
776 struct virtio_net_ctrl_mac *uc, *mc;
779 if (index >= VIRTIO_MAX_MAC_ADDRS) {
780 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
784 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
786 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
789 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
790 struct virtio_net_ctrl_mac *tbl;
792 if (i == index || is_zero_ether_addr(addrs + i))
795 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
796 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
799 virtio_mac_table_set(hw, uc, mc);
803 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
805 struct virtio_hw *hw = dev->data->dev_private;
807 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
809 /* Use atomic update if available */
810 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
811 struct virtio_pmd_ctrl ctrl;
812 int len = ETHER_ADDR_LEN;
814 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
815 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
817 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
818 virtio_send_command(hw->cvq, &ctrl, &len, 1);
819 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
820 virtio_set_hwaddr(hw);
824 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
826 struct virtio_hw *hw = dev->data->dev_private;
827 struct virtio_pmd_ctrl ctrl;
830 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
833 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
834 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
835 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
836 len = sizeof(vlan_id);
838 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
842 virtio_negotiate_features(struct virtio_hw *hw)
844 uint32_t host_features;
846 /* Prepare guest_features: feature that driver wants to support */
847 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
848 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %x",
851 /* Read device(host) feature bits */
852 host_features = VIRTIO_READ_REG_4(hw, VIRTIO_PCI_HOST_FEATURES);
853 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %x",
857 * Negotiate features: Subset of device feature bits are written back
858 * guest feature bits.
860 hw->guest_features = vtpci_negotiate_features(hw, host_features);
861 PMD_INIT_LOG(DEBUG, "features after negotiate = %x",
865 #ifdef RTE_EXEC_ENV_LINUXAPP
867 parse_sysfs_value(const char *filename, unsigned long *val)
873 f = fopen(filename, "r");
875 PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
880 if (fgets(buf, sizeof(buf), f) == NULL) {
881 PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
886 *val = strtoul(buf, &end, 0);
887 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
888 PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
897 static int get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
898 unsigned int *uio_num)
902 char dirname[PATH_MAX];
904 /* depending on kernel version, uio can be located in uio/uioX
906 snprintf(dirname, sizeof(dirname),
907 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
908 loc->domain, loc->bus, loc->devid, loc->function);
909 dir = opendir(dirname);
911 /* retry with the parent directory */
912 snprintf(dirname, sizeof(dirname),
913 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
914 loc->domain, loc->bus, loc->devid, loc->function);
915 dir = opendir(dirname);
918 PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
923 /* take the first file starting with "uio" */
924 while ((e = readdir(dir)) != NULL) {
925 /* format could be uio%d ...*/
926 int shortprefix_len = sizeof("uio") - 1;
927 /* ... or uio:uio%d */
928 int longprefix_len = sizeof("uio:uio") - 1;
931 if (strncmp(e->d_name, "uio", 3) != 0)
934 /* first try uio%d */
936 *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
937 if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
938 snprintf(buf, buflen, "%s/uio%u", dirname, *uio_num);
942 /* then try uio:uio%d */
944 *uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
945 if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
946 snprintf(buf, buflen, "%s/uio:uio%u", dirname,
953 /* No uio resource found */
955 PMD_INIT_LOG(ERR, "Could not find uio resource");
963 virtio_has_msix(const struct rte_pci_addr *loc)
966 char dirname[PATH_MAX];
968 snprintf(dirname, sizeof(dirname),
969 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
970 loc->domain, loc->bus, loc->devid, loc->function);
972 d = opendir(dirname);
979 /* Extract I/O port numbers from sysfs */
980 static int virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
982 char dirname[PATH_MAX];
983 char filename[PATH_MAX];
984 unsigned long start, size;
985 unsigned int uio_num;
987 if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
990 /* get portio size */
991 snprintf(filename, sizeof(filename),
992 "%s/portio/port0/size", dirname);
993 if (parse_sysfs_value(filename, &size) < 0) {
994 PMD_INIT_LOG(ERR, "%s(): cannot parse size",
999 /* get portio start */
1000 snprintf(filename, sizeof(filename),
1001 "%s/portio/port0/start", dirname);
1002 if (parse_sysfs_value(filename, &start) < 0) {
1003 PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
1007 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
1008 pci_dev->mem_resource[0].len = (uint64_t)size;
1010 "PCI Port IO found start=0x%lx with size=0x%lx",
1014 memset(dirname, 0, sizeof(dirname));
1015 snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
1016 pci_dev->intr_handle.fd = open(dirname, O_RDWR);
1017 if (pci_dev->intr_handle.fd < 0) {
1018 PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
1019 dirname, strerror(errno));
1023 pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
1024 pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
1029 /* Extract port I/O numbers from proc/ioports */
1030 static int virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
1032 uint16_t start, end;
1040 snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
1041 pci_dev->addr.domain,
1043 pci_dev->addr.devid,
1044 pci_dev->addr.function);
1046 fp = fopen("/proc/ioports", "r");
1048 PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
1052 while (getdelim(&line, &linesz, '\n', fp) > 0) {
1057 n = strcspn(ptr, ":");
1061 while (*left && isspace(*left))
1064 if (!strncmp(left, pci_id, strlen(pci_id))) {
1067 while (*ptr && isspace(*ptr))
1070 sscanf(ptr, "%04hx-%04hx", &start, &end);
1071 size = end - start + 1;
1083 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
1084 pci_dev->mem_resource[0].len = (uint64_t)size;
1086 "PCI Port IO found start=0x%x with size=0x%x",
1089 /* can't support lsc interrupt without uio */
1090 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1095 /* Extract I/O port numbers from sysfs */
1096 static int virtio_resource_init(struct rte_pci_device *pci_dev)
1098 if (virtio_resource_init_by_uio(pci_dev) == 0)
1101 return virtio_resource_init_by_ioports(pci_dev);
1106 virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
1108 /* nic_uio does not enable interrupts, return 0 (false). */
1112 static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
1114 /* no setup required */
1120 * Process Virtio Config changed interrupt and call the callback
1121 * if link state changed.
1124 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1127 struct rte_eth_dev *dev = param;
1128 struct virtio_hw *hw = dev->data->dev_private;
1131 /* Read interrupt status which clears interrupt */
1132 isr = vtpci_isr(hw);
1133 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1135 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1136 PMD_DRV_LOG(ERR, "interrupt enable failed");
1138 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1139 if (virtio_dev_link_update(dev, 0) == 0)
1140 _rte_eth_dev_callback_process(dev,
1141 RTE_ETH_EVENT_INTR_LSC);
1147 rx_func_get(struct rte_eth_dev *eth_dev)
1149 struct virtio_hw *hw = eth_dev->data->dev_private;
1150 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1151 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1153 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1157 * This function is based on probe() function in virtio_pci.c
1158 * It returns 0 on success.
1161 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1163 struct virtio_hw *hw = eth_dev->data->dev_private;
1164 struct virtio_net_config *config;
1165 struct virtio_net_config local_config;
1166 uint32_t offset_conf = sizeof(config->mac);
1167 struct rte_pci_device *pci_dev;
1169 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
1171 eth_dev->dev_ops = &virtio_eth_dev_ops;
1172 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1174 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1175 rx_func_get(eth_dev);
1179 /* Allocate memory for storing MAC addresses */
1180 eth_dev->data->mac_addrs = rte_zmalloc("virtio", ETHER_ADDR_LEN, 0);
1181 if (eth_dev->data->mac_addrs == NULL) {
1183 "Failed to allocate %d bytes needed to store MAC addresses",
1188 pci_dev = eth_dev->pci_dev;
1189 if (virtio_resource_init(pci_dev) < 0)
1192 hw->use_msix = virtio_has_msix(&pci_dev->addr);
1193 hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
1195 /* Reset the device although not necessary at startup */
1198 /* Tell the host we've noticed this device. */
1199 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1201 /* Tell the host we've known how to drive the device. */
1202 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1203 virtio_negotiate_features(hw);
1205 rx_func_get(eth_dev);
1207 /* Setting up rx_header size for the device */
1208 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1209 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1211 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1213 /* Copy the permanent MAC address to: virtio_hw */
1214 virtio_get_hwaddr(hw);
1215 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1216 ð_dev->data->mac_addrs[0]);
1218 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1219 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1220 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1222 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1223 config = &local_config;
1225 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1226 offset_conf += sizeof(config->status);
1229 "VIRTIO_NET_F_STATUS is not supported");
1233 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1234 offset_conf += sizeof(config->max_virtqueue_pairs);
1237 "VIRTIO_NET_F_MQ is not supported");
1238 config->max_virtqueue_pairs = 1;
1241 vtpci_read_dev_config(hw, 0, (uint8_t *)config, offset_conf);
1244 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1245 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1247 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1248 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1250 virtio_dev_cq_queue_setup(eth_dev,
1251 config->max_virtqueue_pairs * 2,
1254 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1255 config->max_virtqueue_pairs);
1256 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1258 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1259 config->mac[0], config->mac[1],
1260 config->mac[2], config->mac[3],
1261 config->mac[4], config->mac[5]);
1263 hw->max_rx_queues = 1;
1264 hw->max_tx_queues = 1;
1267 eth_dev->data->nb_rx_queues = hw->max_rx_queues;
1268 eth_dev->data->nb_tx_queues = hw->max_tx_queues;
1270 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1271 hw->max_rx_queues, hw->max_tx_queues);
1272 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1273 eth_dev->data->port_id, pci_dev->id.vendor_id,
1274 pci_dev->id.device_id);
1276 /* Setup interrupt callback */
1277 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1278 rte_intr_callback_register(&pci_dev->intr_handle,
1279 virtio_interrupt_handler, eth_dev);
1281 virtio_dev_cq_start(eth_dev);
1287 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1289 struct rte_pci_device *pci_dev;
1290 struct virtio_hw *hw = eth_dev->data->dev_private;
1292 PMD_INIT_FUNC_TRACE();
1294 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1297 if (hw->started == 1) {
1298 virtio_dev_stop(eth_dev);
1299 virtio_dev_close(eth_dev);
1301 pci_dev = eth_dev->pci_dev;
1303 eth_dev->dev_ops = NULL;
1304 eth_dev->tx_pkt_burst = NULL;
1305 eth_dev->rx_pkt_burst = NULL;
1307 virtio_dev_queue_release(hw->cvq);
1309 rte_free(eth_dev->data->mac_addrs);
1310 eth_dev->data->mac_addrs = NULL;
1312 /* reset interrupt callback */
1313 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1314 rte_intr_callback_unregister(&pci_dev->intr_handle,
1315 virtio_interrupt_handler,
1318 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1323 static struct eth_driver rte_virtio_pmd = {
1325 .name = "rte_virtio_pmd",
1326 .id_table = pci_id_virtio_map,
1327 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1329 .eth_dev_init = eth_virtio_dev_init,
1330 .eth_dev_uninit = eth_virtio_dev_uninit,
1331 .dev_private_size = sizeof(struct virtio_hw),
1335 * Driver initialization routine.
1336 * Invoked once at EAL init time.
1337 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1338 * Returns 0 on success.
1341 rte_virtio_pmd_init(const char *name __rte_unused,
1342 const char *param __rte_unused)
1344 if (rte_eal_iopl_init() != 0) {
1345 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1349 rte_eth_driver_register(&rte_virtio_pmd);
1354 * Configure virtio device
1355 * It returns 0 on success.
1358 virtio_dev_configure(struct rte_eth_dev *dev)
1360 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1361 struct virtio_hw *hw = dev->data->dev_private;
1362 struct rte_pci_device *pci_dev = dev->pci_dev;
1364 PMD_INIT_LOG(DEBUG, "configure");
1366 if (rxmode->hw_ip_checksum) {
1367 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1371 hw->vlan_strip = rxmode->hw_vlan_strip;
1373 if (rxmode->hw_vlan_filter
1374 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1376 "vlan filtering not available on this host");
1380 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1381 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1382 PMD_DRV_LOG(ERR, "failed to set config vector");
1391 virtio_dev_start(struct rte_eth_dev *dev)
1393 uint16_t nb_queues, i;
1394 struct virtio_hw *hw = dev->data->dev_private;
1395 struct rte_pci_device *pci_dev = dev->pci_dev;
1397 /* check if lsc interrupt feature is enabled */
1398 if ((dev->data->dev_conf.intr_conf.lsc) &&
1399 (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
1400 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1401 PMD_DRV_LOG(ERR, "link status not supported by host");
1405 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1406 PMD_DRV_LOG(ERR, "interrupt enable failed");
1411 /* Initialize Link state */
1412 virtio_dev_link_update(dev, 0);
1414 /* On restart after stop do not touch queues */
1418 /* Do final configuration before rx/tx engine starts */
1419 virtio_dev_rxtx_start(dev);
1420 vtpci_reinit_complete(hw);
1424 /*Notify the backend
1425 *Otherwise the tap backend might already stop its queue due to fullness.
1426 *vhost backend will have no chance to be waked up
1428 nb_queues = dev->data->nb_rx_queues;
1429 if (nb_queues > 1) {
1430 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1434 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1436 for (i = 0; i < nb_queues; i++)
1437 virtqueue_notify(dev->data->rx_queues[i]);
1439 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1441 for (i = 0; i < dev->data->nb_rx_queues; i++)
1442 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1444 for (i = 0; i < dev->data->nb_tx_queues; i++)
1445 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1450 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1452 struct rte_mbuf *buf;
1453 int i, mbuf_num = 0;
1455 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1457 "Before freeing rxq[%d] used and unused buf", i);
1458 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1460 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1461 i, dev->data->rx_queues[i]);
1462 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1463 dev->data->rx_queues[i])) != NULL) {
1464 rte_pktmbuf_free(buf);
1468 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1470 "After freeing rxq[%d] used and unused buf", i);
1471 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1474 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1476 "Before freeing txq[%d] used and unused bufs",
1478 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1481 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1482 dev->data->tx_queues[i])) != NULL) {
1483 rte_pktmbuf_free(buf);
1488 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1490 "After freeing txq[%d] used and unused buf", i);
1491 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1496 * Stop device: disable interrupt and mark link down
1499 virtio_dev_stop(struct rte_eth_dev *dev)
1501 struct rte_eth_link link;
1503 PMD_INIT_LOG(DEBUG, "stop");
1505 if (dev->data->dev_conf.intr_conf.lsc)
1506 rte_intr_disable(&dev->pci_dev->intr_handle);
1508 memset(&link, 0, sizeof(link));
1509 virtio_dev_atomic_write_link_status(dev, &link);
1513 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1515 struct rte_eth_link link, old;
1517 struct virtio_hw *hw = dev->data->dev_private;
1518 memset(&link, 0, sizeof(link));
1519 virtio_dev_atomic_read_link_status(dev, &link);
1521 link.link_duplex = FULL_DUPLEX;
1522 link.link_speed = SPEED_10G;
1524 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1525 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1526 vtpci_read_dev_config(hw,
1527 offsetof(struct virtio_net_config, status),
1528 &status, sizeof(status));
1529 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1530 link.link_status = 0;
1531 PMD_INIT_LOG(DEBUG, "Port %d is down",
1532 dev->data->port_id);
1534 link.link_status = 1;
1535 PMD_INIT_LOG(DEBUG, "Port %d is up",
1536 dev->data->port_id);
1539 link.link_status = 1; /* Link up */
1541 virtio_dev_atomic_write_link_status(dev, &link);
1543 return (old.link_status == link.link_status) ? -1 : 0;
1547 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1549 struct virtio_hw *hw = dev->data->dev_private;
1551 dev_info->driver_name = dev->driver->pci_drv.name;
1552 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1553 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1554 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1555 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1556 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1557 dev_info->default_txconf = (struct rte_eth_txconf) {
1558 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1563 * It enables testpmd to collect per queue stats.
1566 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1567 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1568 __rte_unused uint8_t is_rx)
1573 static struct rte_driver rte_virtio_driver = {
1575 .init = rte_virtio_pmd_init,
1578 PMD_REGISTER_DRIVER(rte_virtio_driver);