4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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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
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21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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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;
246 /* Select and deactivate the queue */
247 VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vq->queue_id);
248 VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN, 0);
255 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
258 uint16_t vtpci_queue_idx,
260 unsigned int socket_id,
261 struct virtqueue **pvq)
263 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
264 const struct rte_memzone *mz;
265 unsigned int vq_size, size;
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: %u", 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: %u nb_desc:%u", 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;
417 struct virtio_hw *hw = dev->data->dev_private;
419 PMD_INIT_FUNC_TRACE();
420 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
421 vtpci_queue_idx, 0, socket_id, &vq);
423 PMD_INIT_LOG(ERR, "control vq initialization failed");
432 virtio_free_queues(struct rte_eth_dev *dev)
436 for (i = 0; i < dev->data->nb_rx_queues; i++)
437 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
439 dev->data->nb_rx_queues = 0;
441 for (i = 0; i < dev->data->nb_tx_queues; i++)
442 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
444 dev->data->nb_tx_queues = 0;
448 virtio_dev_close(struct rte_eth_dev *dev)
450 struct virtio_hw *hw = dev->data->dev_private;
451 struct rte_pci_device *pci_dev = dev->pci_dev;
453 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
456 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
457 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
460 virtio_dev_free_mbufs(dev);
461 virtio_free_queues(dev);
465 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
467 struct virtio_hw *hw = dev->data->dev_private;
468 struct virtio_pmd_ctrl ctrl;
472 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
473 PMD_INIT_LOG(INFO, "host does not support rx control\n");
477 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
478 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
482 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
484 PMD_INIT_LOG(ERR, "Failed to enable promisc");
488 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
490 struct virtio_hw *hw = dev->data->dev_private;
491 struct virtio_pmd_ctrl ctrl;
495 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
496 PMD_INIT_LOG(INFO, "host does not support rx control\n");
500 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
501 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
505 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
507 PMD_INIT_LOG(ERR, "Failed to disable promisc");
511 virtio_dev_allmulticast_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_ALLMULTI;
528 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
530 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
534 virtio_dev_allmulticast_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_ALLMULTI;
551 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
553 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
557 * dev_ops for virtio, bare necessities for basic operation
559 static const struct eth_dev_ops virtio_eth_dev_ops = {
560 .dev_configure = virtio_dev_configure,
561 .dev_start = virtio_dev_start,
562 .dev_stop = virtio_dev_stop,
563 .dev_close = virtio_dev_close,
564 .promiscuous_enable = virtio_dev_promiscuous_enable,
565 .promiscuous_disable = virtio_dev_promiscuous_disable,
566 .allmulticast_enable = virtio_dev_allmulticast_enable,
567 .allmulticast_disable = virtio_dev_allmulticast_disable,
569 .dev_infos_get = virtio_dev_info_get,
570 .stats_get = virtio_dev_stats_get,
571 .stats_reset = virtio_dev_stats_reset,
572 .link_update = virtio_dev_link_update,
573 .rx_queue_setup = virtio_dev_rx_queue_setup,
574 .rx_queue_release = virtio_dev_rx_queue_release,
575 .tx_queue_setup = virtio_dev_tx_queue_setup,
576 .tx_queue_release = virtio_dev_tx_queue_release,
577 /* collect stats per queue */
578 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
579 .vlan_filter_set = virtio_vlan_filter_set,
580 .mac_addr_add = virtio_mac_addr_add,
581 .mac_addr_remove = virtio_mac_addr_remove,
582 .mac_addr_set = virtio_mac_addr_set,
586 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
587 struct rte_eth_link *link)
589 struct rte_eth_link *dst = link;
590 struct rte_eth_link *src = &(dev->data->dev_link);
592 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
593 *(uint64_t *)src) == 0)
600 * Atomically writes the link status information into global
601 * structure rte_eth_dev.
604 * - Pointer to the structure rte_eth_dev to read from.
605 * - Pointer to the buffer to be saved with the link status.
608 * - On success, zero.
609 * - On failure, negative value.
612 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
613 struct rte_eth_link *link)
615 struct rte_eth_link *dst = &(dev->data->dev_link);
616 struct rte_eth_link *src = link;
618 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
619 *(uint64_t *)src) == 0)
626 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
630 for (i = 0; i < dev->data->nb_tx_queues; i++) {
631 const struct virtqueue *txvq = dev->data->tx_queues[i];
635 stats->opackets += txvq->packets;
636 stats->obytes += txvq->bytes;
637 stats->oerrors += txvq->errors;
639 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
640 stats->q_opackets[i] = txvq->packets;
641 stats->q_obytes[i] = txvq->bytes;
645 for (i = 0; i < dev->data->nb_rx_queues; i++) {
646 const struct virtqueue *rxvq = dev->data->rx_queues[i];
650 stats->ipackets += rxvq->packets;
651 stats->ibytes += rxvq->bytes;
652 stats->ierrors += rxvq->errors;
654 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
655 stats->q_ipackets[i] = rxvq->packets;
656 stats->q_ibytes[i] = rxvq->bytes;
660 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
664 virtio_dev_stats_reset(struct rte_eth_dev *dev)
668 for (i = 0; i < dev->data->nb_tx_queues; i++) {
669 struct virtqueue *txvq = dev->data->tx_queues[i];
678 for (i = 0; i < dev->data->nb_rx_queues; i++) {
679 struct virtqueue *rxvq = dev->data->rx_queues[i];
688 dev->data->rx_mbuf_alloc_failed = 0;
692 virtio_set_hwaddr(struct virtio_hw *hw)
694 vtpci_write_dev_config(hw,
695 offsetof(struct virtio_net_config, mac),
696 &hw->mac_addr, ETHER_ADDR_LEN);
700 virtio_get_hwaddr(struct virtio_hw *hw)
702 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
703 vtpci_read_dev_config(hw,
704 offsetof(struct virtio_net_config, mac),
705 &hw->mac_addr, ETHER_ADDR_LEN);
707 eth_random_addr(&hw->mac_addr[0]);
708 virtio_set_hwaddr(hw);
713 virtio_mac_table_set(struct virtio_hw *hw,
714 const struct virtio_net_ctrl_mac *uc,
715 const struct virtio_net_ctrl_mac *mc)
717 struct virtio_pmd_ctrl ctrl;
720 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
721 PMD_DRV_LOG(INFO, "host does not support mac table\n");
725 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
726 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
728 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
729 memcpy(ctrl.data, uc, len[0]);
731 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
732 memcpy(ctrl.data + len[0], mc, len[1]);
734 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
736 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
740 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
741 uint32_t index, uint32_t vmdq __rte_unused)
743 struct virtio_hw *hw = dev->data->dev_private;
744 const struct ether_addr *addrs = dev->data->mac_addrs;
746 struct virtio_net_ctrl_mac *uc, *mc;
748 if (index >= VIRTIO_MAX_MAC_ADDRS) {
749 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
753 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
755 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
758 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
759 const struct ether_addr *addr
760 = (i == index) ? mac_addr : addrs + i;
761 struct virtio_net_ctrl_mac *tbl
762 = is_multicast_ether_addr(addr) ? mc : uc;
764 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
767 virtio_mac_table_set(hw, uc, mc);
771 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
773 struct virtio_hw *hw = dev->data->dev_private;
774 struct ether_addr *addrs = dev->data->mac_addrs;
775 struct virtio_net_ctrl_mac *uc, *mc;
778 if (index >= VIRTIO_MAX_MAC_ADDRS) {
779 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
783 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
785 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
788 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
789 struct virtio_net_ctrl_mac *tbl;
791 if (i == index || is_zero_ether_addr(addrs + i))
794 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
795 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
798 virtio_mac_table_set(hw, uc, mc);
802 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
804 struct virtio_hw *hw = dev->data->dev_private;
806 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
808 /* Use atomic update if available */
809 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
810 struct virtio_pmd_ctrl ctrl;
811 int len = ETHER_ADDR_LEN;
813 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
814 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
816 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
817 virtio_send_command(hw->cvq, &ctrl, &len, 1);
818 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
819 virtio_set_hwaddr(hw);
823 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
825 struct virtio_hw *hw = dev->data->dev_private;
826 struct virtio_pmd_ctrl ctrl;
829 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
832 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
833 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
834 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
835 len = sizeof(vlan_id);
837 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
841 virtio_negotiate_features(struct virtio_hw *hw)
843 uint32_t host_features;
845 /* Prepare guest_features: feature that driver wants to support */
846 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
847 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %x",
850 /* Read device(host) feature bits */
851 host_features = VIRTIO_READ_REG_4(hw, VIRTIO_PCI_HOST_FEATURES);
852 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %x",
856 * Negotiate features: Subset of device feature bits are written back
857 * guest feature bits.
859 hw->guest_features = vtpci_negotiate_features(hw, host_features);
860 PMD_INIT_LOG(DEBUG, "features after negotiate = %x",
864 #ifdef RTE_EXEC_ENV_LINUXAPP
866 parse_sysfs_value(const char *filename, unsigned long *val)
872 f = fopen(filename, "r");
874 PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
879 if (fgets(buf, sizeof(buf), f) == NULL) {
880 PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
885 *val = strtoul(buf, &end, 0);
886 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
887 PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
896 static int get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
897 unsigned int *uio_num)
901 char dirname[PATH_MAX];
903 /* depending on kernel version, uio can be located in uio/uioX
905 snprintf(dirname, sizeof(dirname),
906 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
907 loc->domain, loc->bus, loc->devid, loc->function);
908 dir = opendir(dirname);
910 /* retry with the parent directory */
911 snprintf(dirname, sizeof(dirname),
912 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
913 loc->domain, loc->bus, loc->devid, loc->function);
914 dir = opendir(dirname);
917 PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
922 /* take the first file starting with "uio" */
923 while ((e = readdir(dir)) != NULL) {
924 /* format could be uio%d ...*/
925 int shortprefix_len = sizeof("uio") - 1;
926 /* ... or uio:uio%d */
927 int longprefix_len = sizeof("uio:uio") - 1;
930 if (strncmp(e->d_name, "uio", 3) != 0)
933 /* first try uio%d */
935 *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
936 if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
937 snprintf(buf, buflen, "%s/uio%u", dirname, *uio_num);
941 /* then try uio:uio%d */
943 *uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
944 if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
945 snprintf(buf, buflen, "%s/uio:uio%u", dirname,
952 /* No uio resource found */
954 PMD_INIT_LOG(ERR, "Could not find uio resource");
962 virtio_has_msix(const struct rte_pci_addr *loc)
965 char dirname[PATH_MAX];
967 snprintf(dirname, sizeof(dirname),
968 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
969 loc->domain, loc->bus, loc->devid, loc->function);
971 d = opendir(dirname);
978 /* Extract I/O port numbers from sysfs */
979 static int virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
981 char dirname[PATH_MAX];
982 char filename[PATH_MAX];
983 unsigned long start, size;
984 unsigned int uio_num;
986 if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
989 /* get portio size */
990 snprintf(filename, sizeof(filename),
991 "%s/portio/port0/size", dirname);
992 if (parse_sysfs_value(filename, &size) < 0) {
993 PMD_INIT_LOG(ERR, "%s(): cannot parse size",
998 /* get portio start */
999 snprintf(filename, sizeof(filename),
1000 "%s/portio/port0/start", dirname);
1001 if (parse_sysfs_value(filename, &start) < 0) {
1002 PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
1006 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
1007 pci_dev->mem_resource[0].len = (uint64_t)size;
1009 "PCI Port IO found start=0x%lx with size=0x%lx",
1013 memset(dirname, 0, sizeof(dirname));
1014 snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
1015 pci_dev->intr_handle.fd = open(dirname, O_RDWR);
1016 if (pci_dev->intr_handle.fd < 0) {
1017 PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
1018 dirname, strerror(errno));
1022 pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
1023 pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
1028 /* Extract port I/O numbers from proc/ioports */
1029 static int virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
1031 uint16_t start, end;
1039 snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
1040 pci_dev->addr.domain,
1042 pci_dev->addr.devid,
1043 pci_dev->addr.function);
1045 fp = fopen("/proc/ioports", "r");
1047 PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
1051 while (getdelim(&line, &linesz, '\n', fp) > 0) {
1056 n = strcspn(ptr, ":");
1060 while (*left && isspace(*left))
1063 if (!strncmp(left, pci_id, strlen(pci_id))) {
1066 while (*ptr && isspace(*ptr))
1069 sscanf(ptr, "%04hx-%04hx", &start, &end);
1070 size = end - start + 1;
1082 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
1083 pci_dev->mem_resource[0].len = (uint64_t)size;
1085 "PCI Port IO found start=0x%x with size=0x%x",
1088 /* can't support lsc interrupt without uio */
1089 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1094 /* Extract I/O port numbers from sysfs */
1095 static int virtio_resource_init(struct rte_pci_device *pci_dev)
1097 if (virtio_resource_init_by_uio(pci_dev) == 0)
1100 return virtio_resource_init_by_ioports(pci_dev);
1105 virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
1107 /* nic_uio does not enable interrupts, return 0 (false). */
1111 static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
1113 /* no setup required */
1119 * Process Virtio Config changed interrupt and call the callback
1120 * if link state changed.
1123 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1126 struct rte_eth_dev *dev = param;
1127 struct virtio_hw *hw = dev->data->dev_private;
1130 /* Read interrupt status which clears interrupt */
1131 isr = vtpci_isr(hw);
1132 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1134 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1135 PMD_DRV_LOG(ERR, "interrupt enable failed");
1137 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1138 if (virtio_dev_link_update(dev, 0) == 0)
1139 _rte_eth_dev_callback_process(dev,
1140 RTE_ETH_EVENT_INTR_LSC);
1146 rx_func_get(struct rte_eth_dev *eth_dev)
1148 struct virtio_hw *hw = eth_dev->data->dev_private;
1149 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1150 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1152 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1156 * This function is based on probe() function in virtio_pci.c
1157 * It returns 0 on success.
1160 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1162 struct virtio_hw *hw = eth_dev->data->dev_private;
1163 struct virtio_net_config *config;
1164 struct virtio_net_config local_config;
1165 uint32_t offset_conf = sizeof(config->mac);
1166 struct rte_pci_device *pci_dev;
1168 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
1170 eth_dev->dev_ops = &virtio_eth_dev_ops;
1171 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1173 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1174 rx_func_get(eth_dev);
1178 /* Allocate memory for storing MAC addresses */
1179 eth_dev->data->mac_addrs = rte_zmalloc("virtio", ETHER_ADDR_LEN, 0);
1180 if (eth_dev->data->mac_addrs == NULL) {
1182 "Failed to allocate %d bytes needed to store MAC addresses",
1187 pci_dev = eth_dev->pci_dev;
1188 if (virtio_resource_init(pci_dev) < 0)
1191 hw->use_msix = virtio_has_msix(&pci_dev->addr);
1192 hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
1194 /* Reset the device although not necessary at startup */
1197 /* Tell the host we've noticed this device. */
1198 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1200 /* Tell the host we've known how to drive the device. */
1201 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1202 virtio_negotiate_features(hw);
1204 /* If host does not support status then disable LSC */
1205 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1206 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1208 rx_func_get(eth_dev);
1210 /* Setting up rx_header size for the device */
1211 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1212 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1214 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1216 /* Copy the permanent MAC address to: virtio_hw */
1217 virtio_get_hwaddr(hw);
1218 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1219 ð_dev->data->mac_addrs[0]);
1221 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1222 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1223 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1225 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1226 config = &local_config;
1228 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1229 offset_conf += sizeof(config->status);
1232 "VIRTIO_NET_F_STATUS is not supported");
1236 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1237 offset_conf += sizeof(config->max_virtqueue_pairs);
1240 "VIRTIO_NET_F_MQ is not supported");
1241 config->max_virtqueue_pairs = 1;
1244 vtpci_read_dev_config(hw, 0, (uint8_t *)config, offset_conf);
1247 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1248 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1250 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1251 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1253 virtio_dev_cq_queue_setup(eth_dev,
1254 config->max_virtqueue_pairs * 2,
1257 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1258 config->max_virtqueue_pairs);
1259 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1261 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1262 config->mac[0], config->mac[1],
1263 config->mac[2], config->mac[3],
1264 config->mac[4], config->mac[5]);
1266 hw->max_rx_queues = 1;
1267 hw->max_tx_queues = 1;
1270 eth_dev->data->nb_rx_queues = hw->max_rx_queues;
1271 eth_dev->data->nb_tx_queues = hw->max_tx_queues;
1273 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1274 hw->max_rx_queues, hw->max_tx_queues);
1275 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1276 eth_dev->data->port_id, pci_dev->id.vendor_id,
1277 pci_dev->id.device_id);
1279 /* Setup interrupt callback */
1280 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1281 rte_intr_callback_register(&pci_dev->intr_handle,
1282 virtio_interrupt_handler, eth_dev);
1284 virtio_dev_cq_start(eth_dev);
1290 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1292 struct rte_pci_device *pci_dev;
1293 struct virtio_hw *hw = eth_dev->data->dev_private;
1295 PMD_INIT_FUNC_TRACE();
1297 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1300 if (hw->started == 1) {
1301 virtio_dev_stop(eth_dev);
1302 virtio_dev_close(eth_dev);
1304 pci_dev = eth_dev->pci_dev;
1306 eth_dev->dev_ops = NULL;
1307 eth_dev->tx_pkt_burst = NULL;
1308 eth_dev->rx_pkt_burst = NULL;
1310 virtio_dev_queue_release(hw->cvq);
1312 rte_free(eth_dev->data->mac_addrs);
1313 eth_dev->data->mac_addrs = NULL;
1315 /* reset interrupt callback */
1316 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1317 rte_intr_callback_unregister(&pci_dev->intr_handle,
1318 virtio_interrupt_handler,
1321 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1326 static struct eth_driver rte_virtio_pmd = {
1328 .name = "rte_virtio_pmd",
1329 .id_table = pci_id_virtio_map,
1330 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1332 .eth_dev_init = eth_virtio_dev_init,
1333 .eth_dev_uninit = eth_virtio_dev_uninit,
1334 .dev_private_size = sizeof(struct virtio_hw),
1338 * Driver initialization routine.
1339 * Invoked once at EAL init time.
1340 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1341 * Returns 0 on success.
1344 rte_virtio_pmd_init(const char *name __rte_unused,
1345 const char *param __rte_unused)
1347 if (rte_eal_iopl_init() != 0) {
1348 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1352 rte_eth_driver_register(&rte_virtio_pmd);
1357 * Configure virtio device
1358 * It returns 0 on success.
1361 virtio_dev_configure(struct rte_eth_dev *dev)
1363 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1364 struct virtio_hw *hw = dev->data->dev_private;
1365 struct rte_pci_device *pci_dev = dev->pci_dev;
1367 PMD_INIT_LOG(DEBUG, "configure");
1369 if (rxmode->hw_ip_checksum) {
1370 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1374 hw->vlan_strip = rxmode->hw_vlan_strip;
1376 if (rxmode->hw_vlan_filter
1377 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1379 "vlan filtering not available on this host");
1383 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1384 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1385 PMD_DRV_LOG(ERR, "failed to set config vector");
1394 virtio_dev_start(struct rte_eth_dev *dev)
1396 uint16_t nb_queues, i;
1397 struct virtio_hw *hw = dev->data->dev_private;
1398 struct rte_pci_device *pci_dev = dev->pci_dev;
1400 /* check if lsc interrupt feature is enabled */
1401 if (dev->data->dev_conf.intr_conf.lsc) {
1402 if (!(pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
1403 PMD_DRV_LOG(ERR, "link status not supported by host");
1407 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1408 PMD_DRV_LOG(ERR, "interrupt enable failed");
1413 /* Initialize Link state */
1414 virtio_dev_link_update(dev, 0);
1416 /* On restart after stop do not touch queues */
1420 /* Do final configuration before rx/tx engine starts */
1421 virtio_dev_rxtx_start(dev);
1422 vtpci_reinit_complete(hw);
1426 /*Notify the backend
1427 *Otherwise the tap backend might already stop its queue due to fullness.
1428 *vhost backend will have no chance to be waked up
1430 nb_queues = dev->data->nb_rx_queues;
1431 if (nb_queues > 1) {
1432 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1436 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1438 for (i = 0; i < nb_queues; i++)
1439 virtqueue_notify(dev->data->rx_queues[i]);
1441 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1443 for (i = 0; i < dev->data->nb_rx_queues; i++)
1444 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1446 for (i = 0; i < dev->data->nb_tx_queues; i++)
1447 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1452 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1454 struct rte_mbuf *buf;
1455 int i, mbuf_num = 0;
1457 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1459 "Before freeing rxq[%d] used and unused buf", i);
1460 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1462 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1463 i, dev->data->rx_queues[i]);
1464 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1465 dev->data->rx_queues[i])) != NULL) {
1466 rte_pktmbuf_free(buf);
1470 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1472 "After freeing rxq[%d] used and unused buf", i);
1473 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1476 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1478 "Before freeing txq[%d] used and unused bufs",
1480 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1483 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1484 dev->data->tx_queues[i])) != NULL) {
1485 rte_pktmbuf_free(buf);
1490 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1492 "After freeing txq[%d] used and unused buf", i);
1493 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1498 * Stop device: disable interrupt and mark link down
1501 virtio_dev_stop(struct rte_eth_dev *dev)
1503 struct rte_eth_link link;
1505 PMD_INIT_LOG(DEBUG, "stop");
1507 if (dev->data->dev_conf.intr_conf.lsc)
1508 rte_intr_disable(&dev->pci_dev->intr_handle);
1510 memset(&link, 0, sizeof(link));
1511 virtio_dev_atomic_write_link_status(dev, &link);
1515 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1517 struct rte_eth_link link, old;
1519 struct virtio_hw *hw = dev->data->dev_private;
1520 memset(&link, 0, sizeof(link));
1521 virtio_dev_atomic_read_link_status(dev, &link);
1523 link.link_duplex = FULL_DUPLEX;
1524 link.link_speed = SPEED_10G;
1526 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1527 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1528 vtpci_read_dev_config(hw,
1529 offsetof(struct virtio_net_config, status),
1530 &status, sizeof(status));
1531 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1532 link.link_status = 0;
1533 PMD_INIT_LOG(DEBUG, "Port %d is down",
1534 dev->data->port_id);
1536 link.link_status = 1;
1537 PMD_INIT_LOG(DEBUG, "Port %d is up",
1538 dev->data->port_id);
1541 link.link_status = 1; /* Link up */
1543 virtio_dev_atomic_write_link_status(dev, &link);
1545 return (old.link_status == link.link_status) ? -1 : 0;
1549 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1551 struct virtio_hw *hw = dev->data->dev_private;
1553 dev_info->driver_name = dev->driver->pci_drv.name;
1554 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1555 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1556 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1557 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1558 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1559 dev_info->default_txconf = (struct rte_eth_txconf) {
1560 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1565 * It enables testpmd to collect per queue stats.
1568 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1569 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1570 __rte_unused uint8_t is_rx)
1575 static struct rte_driver rte_virtio_driver = {
1577 .init = rte_virtio_pmd_init,
1580 PMD_REGISTER_DRIVER(rte_virtio_driver);