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.
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
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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_rx_queue_release(__rte_unused void *rxq);
84 static void virtio_dev_tx_queue_release(__rte_unused void *txq);
86 static void virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
87 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
88 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
89 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
90 uint16_t vlan_id, int on);
91 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
92 struct ether_addr *mac_addr,
93 uint32_t index, uint32_t vmdq __rte_unused);
94 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
95 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
96 struct ether_addr *mac_addr);
98 static int virtio_dev_queue_stats_mapping_set(
99 __rte_unused struct rte_eth_dev *eth_dev,
100 __rte_unused uint16_t queue_id,
101 __rte_unused uint8_t stat_idx,
102 __rte_unused uint8_t is_rx);
105 * The set of PCI devices this driver supports
107 static const struct rte_pci_id pci_id_virtio_map[] = {
109 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
110 #include "rte_pci_dev_ids.h"
112 { .vendor_id = 0, /* sentinel */ },
116 virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
117 int *dlen, int pkt_num)
121 virtio_net_ctrl_ack status = ~0;
122 struct virtio_pmd_ctrl result;
124 ctrl->status = status;
126 if (!(vq && vq->hw->cvq)) {
128 "%s(): Control queue is not supported.",
132 head = vq->vq_desc_head_idx;
134 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
135 "vq->hw->cvq = %p vq = %p",
136 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
138 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
141 memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
142 sizeof(struct virtio_pmd_ctrl));
145 * Format is enforced in qemu code:
146 * One TX packet for header;
147 * At least one TX packet per argument;
148 * One RX packet for ACK.
150 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
151 vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
152 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
154 i = vq->vq_ring.desc[head].next;
156 for (k = 0; k < pkt_num; k++) {
157 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
158 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
159 + sizeof(struct virtio_net_ctrl_hdr)
160 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
161 vq->vq_ring.desc[i].len = dlen[k];
164 i = vq->vq_ring.desc[i].next;
167 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
168 vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
169 + sizeof(struct virtio_net_ctrl_hdr);
170 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
173 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
175 vq_update_avail_ring(vq, head);
176 vq_update_avail_idx(vq);
178 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
180 virtqueue_notify(vq);
183 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
188 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
189 uint32_t idx, desc_idx, used_idx;
190 struct vring_used_elem *uep;
192 used_idx = (uint32_t)(vq->vq_used_cons_idx
193 & (vq->vq_nentries - 1));
194 uep = &vq->vq_ring.used->ring[used_idx];
195 idx = (uint32_t) uep->id;
198 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
199 desc_idx = vq->vq_ring.desc[desc_idx].next;
203 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
204 vq->vq_desc_head_idx = idx;
206 vq->vq_used_cons_idx++;
210 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
211 vq->vq_free_cnt, vq->vq_desc_head_idx);
213 memcpy(&result, vq->virtio_net_hdr_mz->addr,
214 sizeof(struct virtio_pmd_ctrl));
216 return result.status;
220 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
222 struct virtio_hw *hw = dev->data->dev_private;
223 struct virtio_pmd_ctrl ctrl;
227 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
228 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
229 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
231 dlen[0] = sizeof(uint16_t);
233 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
235 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
236 "failed, this is too late now...");
243 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
246 uint16_t vtpci_queue_idx,
248 unsigned int socket_id,
249 struct virtqueue **pvq)
251 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
252 const struct rte_memzone *mz;
255 struct virtio_hw *hw = dev->data->dev_private;
256 struct virtqueue *vq = NULL;
258 /* Write the virtqueue index to the Queue Select Field */
259 VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vtpci_queue_idx);
260 PMD_INIT_LOG(DEBUG, "selecting queue: %d", vtpci_queue_idx);
263 * Read the virtqueue size from the Queue Size field
264 * Always power of 2 and if 0 virtqueue does not exist
266 vq_size = VIRTIO_READ_REG_2(hw, VIRTIO_PCI_QUEUE_NUM);
267 PMD_INIT_LOG(DEBUG, "vq_size: %d nb_desc:%d", vq_size, nb_desc);
271 PMD_INIT_LOG(ERR, "%s: virtqueue does not exist", __func__);
275 if (!rte_is_power_of_2(vq_size)) {
276 PMD_INIT_LOG(ERR, "%s: virtqueue size is not powerof 2", __func__);
280 if (nb_desc < vq_size) {
281 if (!rte_is_power_of_2(nb_desc)) {
283 "nb_desc(%u) size is not powerof 2",
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 } else if (queue_type == VTNET_TQ) {
296 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d",
297 dev->data->port_id, queue_idx);
298 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
299 vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
300 } else if (queue_type == VTNET_CQ) {
301 snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
303 vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
304 vq_size * sizeof(struct vq_desc_extra),
305 RTE_CACHE_LINE_SIZE);
308 PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue", __func__);
313 vq->port_id = dev->data->port_id;
314 vq->queue_id = queue_idx;
315 vq->vq_queue_index = vtpci_queue_idx;
316 vq->vq_nentries = vq_size;
317 vq->vq_free_cnt = vq_size;
320 * Reserve a memzone for vring elements
322 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
323 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
324 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
326 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
327 socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
329 if (rte_errno == EEXIST)
330 mz = rte_memzone_lookup(vq_name);
338 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
339 * and only accepts 32 bit page frame number.
340 * Check if the allocated physical memory exceeds 16TB.
342 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
343 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
348 memset(mz->addr, 0, sizeof(mz->len));
350 vq->vq_ring_mem = mz->phys_addr;
351 vq->vq_ring_virt_mem = mz->addr;
352 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
353 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
354 vq->virtio_net_hdr_mz = NULL;
355 vq->virtio_net_hdr_mem = 0;
357 if (queue_type == VTNET_TQ) {
359 * For each xmit packet, allocate a virtio_net_hdr
361 snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
362 dev->data->port_id, queue_idx);
363 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
364 vq_size * hw->vtnet_hdr_size,
365 socket_id, 0, RTE_CACHE_LINE_SIZE);
366 if (vq->virtio_net_hdr_mz == NULL) {
367 if (rte_errno == EEXIST)
368 vq->virtio_net_hdr_mz =
369 rte_memzone_lookup(vq_name);
370 if (vq->virtio_net_hdr_mz == NULL) {
375 vq->virtio_net_hdr_mem =
376 vq->virtio_net_hdr_mz->phys_addr;
377 memset(vq->virtio_net_hdr_mz->addr, 0,
378 vq_size * hw->vtnet_hdr_size);
379 } else if (queue_type == VTNET_CQ) {
380 /* Allocate a page for control vq command, data and status */
381 snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
383 vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
384 PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
385 if (vq->virtio_net_hdr_mz == NULL) {
386 if (rte_errno == EEXIST)
387 vq->virtio_net_hdr_mz =
388 rte_memzone_lookup(vq_name);
389 if (vq->virtio_net_hdr_mz == NULL) {
394 vq->virtio_net_hdr_mem =
395 vq->virtio_net_hdr_mz->phys_addr;
396 memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
400 * Set guest physical address of the virtqueue
401 * in VIRTIO_PCI_QUEUE_PFN config register of device
403 VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN,
404 mz->phys_addr >> VIRTIO_PCI_QUEUE_ADDR_SHIFT);
410 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
413 struct virtqueue *vq;
414 uint16_t nb_desc = 0;
416 struct virtio_hw *hw = dev->data->dev_private;
418 PMD_INIT_FUNC_TRACE();
419 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
420 vtpci_queue_idx, nb_desc, socket_id, &vq);
422 PMD_INIT_LOG(ERR, "control vq initialization failed");
431 virtio_dev_close(struct rte_eth_dev *dev)
433 struct virtio_hw *hw = dev->data->dev_private;
434 struct rte_pci_device *pci_dev = dev->pci_dev;
436 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
439 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
440 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
443 virtio_dev_free_mbufs(dev);
447 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
449 struct virtio_hw *hw = dev->data->dev_private;
450 struct virtio_pmd_ctrl ctrl;
454 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
455 PMD_INIT_LOG(INFO, "host does not support rx control\n");
459 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
460 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
464 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
466 PMD_INIT_LOG(ERR, "Failed to enable promisc");
470 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
472 struct virtio_hw *hw = dev->data->dev_private;
473 struct virtio_pmd_ctrl ctrl;
477 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
478 PMD_INIT_LOG(INFO, "host does not support rx control\n");
482 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
483 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
487 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
489 PMD_INIT_LOG(ERR, "Failed to disable promisc");
493 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
495 struct virtio_hw *hw = dev->data->dev_private;
496 struct virtio_pmd_ctrl ctrl;
500 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
501 PMD_INIT_LOG(INFO, "host does not support rx control\n");
505 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
506 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
510 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
512 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
516 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
518 struct virtio_hw *hw = dev->data->dev_private;
519 struct virtio_pmd_ctrl ctrl;
523 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
524 PMD_INIT_LOG(INFO, "host does not support rx control\n");
528 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
529 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
533 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
535 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
539 * dev_ops for virtio, bare necessities for basic operation
541 static const struct eth_dev_ops virtio_eth_dev_ops = {
542 .dev_configure = virtio_dev_configure,
543 .dev_start = virtio_dev_start,
544 .dev_stop = virtio_dev_stop,
545 .dev_close = virtio_dev_close,
546 .promiscuous_enable = virtio_dev_promiscuous_enable,
547 .promiscuous_disable = virtio_dev_promiscuous_disable,
548 .allmulticast_enable = virtio_dev_allmulticast_enable,
549 .allmulticast_disable = virtio_dev_allmulticast_disable,
551 .dev_infos_get = virtio_dev_info_get,
552 .stats_get = virtio_dev_stats_get,
553 .stats_reset = virtio_dev_stats_reset,
554 .link_update = virtio_dev_link_update,
555 .rx_queue_setup = virtio_dev_rx_queue_setup,
556 /* meaningfull only to multiple queue */
557 .rx_queue_release = virtio_dev_rx_queue_release,
558 .tx_queue_setup = virtio_dev_tx_queue_setup,
559 /* meaningfull only to multiple queue */
560 .tx_queue_release = virtio_dev_tx_queue_release,
561 /* collect stats per queue */
562 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
563 .vlan_filter_set = virtio_vlan_filter_set,
564 .mac_addr_add = virtio_mac_addr_add,
565 .mac_addr_remove = virtio_mac_addr_remove,
566 .mac_addr_set = virtio_mac_addr_set,
570 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
571 struct rte_eth_link *link)
573 struct rte_eth_link *dst = link;
574 struct rte_eth_link *src = &(dev->data->dev_link);
576 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
577 *(uint64_t *)src) == 0)
584 * Atomically writes the link status information into global
585 * structure rte_eth_dev.
588 * - Pointer to the structure rte_eth_dev to read from.
589 * - Pointer to the buffer to be saved with the link status.
592 * - On success, zero.
593 * - On failure, negative value.
596 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
597 struct rte_eth_link *link)
599 struct rte_eth_link *dst = &(dev->data->dev_link);
600 struct rte_eth_link *src = link;
602 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
603 *(uint64_t *)src) == 0)
610 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
614 for (i = 0; i < dev->data->nb_tx_queues; i++) {
615 const struct virtqueue *txvq = dev->data->tx_queues[i];
619 stats->opackets += txvq->packets;
620 stats->obytes += txvq->bytes;
621 stats->oerrors += txvq->errors;
623 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
624 stats->q_opackets[i] = txvq->packets;
625 stats->q_obytes[i] = txvq->bytes;
629 for (i = 0; i < dev->data->nb_rx_queues; i++) {
630 const struct virtqueue *rxvq = dev->data->rx_queues[i];
634 stats->ipackets += rxvq->packets;
635 stats->ibytes += rxvq->bytes;
636 stats->ierrors += rxvq->errors;
638 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
639 stats->q_ipackets[i] = rxvq->packets;
640 stats->q_ibytes[i] = rxvq->bytes;
644 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
648 virtio_dev_stats_reset(struct rte_eth_dev *dev)
652 for (i = 0; i < dev->data->nb_tx_queues; i++) {
653 struct virtqueue *txvq = dev->data->tx_queues[i];
662 for (i = 0; i < dev->data->nb_rx_queues; i++) {
663 struct virtqueue *rxvq = dev->data->rx_queues[i];
672 dev->data->rx_mbuf_alloc_failed = 0;
676 virtio_set_hwaddr(struct virtio_hw *hw)
678 vtpci_write_dev_config(hw,
679 offsetof(struct virtio_net_config, mac),
680 &hw->mac_addr, ETHER_ADDR_LEN);
684 virtio_get_hwaddr(struct virtio_hw *hw)
686 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
687 vtpci_read_dev_config(hw,
688 offsetof(struct virtio_net_config, mac),
689 &hw->mac_addr, ETHER_ADDR_LEN);
691 eth_random_addr(&hw->mac_addr[0]);
692 virtio_set_hwaddr(hw);
697 virtio_mac_table_set(struct virtio_hw *hw,
698 const struct virtio_net_ctrl_mac *uc,
699 const struct virtio_net_ctrl_mac *mc)
701 struct virtio_pmd_ctrl ctrl;
704 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
705 PMD_DRV_LOG(INFO, "host does not support mac table\n");
709 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
710 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
712 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
713 memcpy(ctrl.data, uc, len[0]);
715 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
716 memcpy(ctrl.data + len[0], mc, len[1]);
718 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
720 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
724 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
725 uint32_t index, uint32_t vmdq __rte_unused)
727 struct virtio_hw *hw = dev->data->dev_private;
728 const struct ether_addr *addrs = dev->data->mac_addrs;
730 struct virtio_net_ctrl_mac *uc, *mc;
732 if (index >= VIRTIO_MAX_MAC_ADDRS) {
733 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
737 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
739 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
742 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
743 const struct ether_addr *addr
744 = (i == index) ? mac_addr : addrs + i;
745 struct virtio_net_ctrl_mac *tbl
746 = is_multicast_ether_addr(addr) ? mc : uc;
748 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
751 virtio_mac_table_set(hw, uc, mc);
755 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
757 struct virtio_hw *hw = dev->data->dev_private;
758 struct ether_addr *addrs = dev->data->mac_addrs;
759 struct virtio_net_ctrl_mac *uc, *mc;
762 if (index >= VIRTIO_MAX_MAC_ADDRS) {
763 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
767 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
769 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
772 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
773 struct virtio_net_ctrl_mac *tbl;
775 if (i == index || is_zero_ether_addr(addrs + i))
778 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
779 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
782 virtio_mac_table_set(hw, uc, mc);
786 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
788 struct virtio_hw *hw = dev->data->dev_private;
790 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
792 /* Use atomic update if available */
793 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
794 struct virtio_pmd_ctrl ctrl;
795 int len = ETHER_ADDR_LEN;
797 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
798 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
800 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
801 virtio_send_command(hw->cvq, &ctrl, &len, 1);
802 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
803 virtio_set_hwaddr(hw);
807 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
809 struct virtio_hw *hw = dev->data->dev_private;
810 struct virtio_pmd_ctrl ctrl;
813 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
816 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
817 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
818 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
819 len = sizeof(vlan_id);
821 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
825 virtio_negotiate_features(struct virtio_hw *hw)
827 uint32_t host_features;
829 /* Prepare guest_features: feature that driver wants to support */
830 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
831 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %x",
834 /* Read device(host) feature bits */
835 host_features = VIRTIO_READ_REG_4(hw, VIRTIO_PCI_HOST_FEATURES);
836 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %x",
840 * Negotiate features: Subset of device feature bits are written back
841 * guest feature bits.
843 hw->guest_features = vtpci_negotiate_features(hw, host_features);
844 PMD_INIT_LOG(DEBUG, "features after negotiate = %x",
848 #ifdef RTE_EXEC_ENV_LINUXAPP
850 parse_sysfs_value(const char *filename, unsigned long *val)
856 f = fopen(filename, "r");
858 PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
863 if (fgets(buf, sizeof(buf), f) == NULL) {
864 PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
869 *val = strtoul(buf, &end, 0);
870 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
871 PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
880 static int get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
881 unsigned int *uio_num)
885 char dirname[PATH_MAX];
887 /* depending on kernel version, uio can be located in uio/uioX
889 snprintf(dirname, sizeof(dirname),
890 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
891 loc->domain, loc->bus, loc->devid, loc->function);
892 dir = opendir(dirname);
894 /* retry with the parent directory */
895 snprintf(dirname, sizeof(dirname),
896 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
897 loc->domain, loc->bus, loc->devid, loc->function);
898 dir = opendir(dirname);
901 PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
906 /* take the first file starting with "uio" */
907 while ((e = readdir(dir)) != NULL) {
908 /* format could be uio%d ...*/
909 int shortprefix_len = sizeof("uio") - 1;
910 /* ... or uio:uio%d */
911 int longprefix_len = sizeof("uio:uio") - 1;
914 if (strncmp(e->d_name, "uio", 3) != 0)
917 /* first try uio%d */
919 *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
920 if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
921 snprintf(buf, buflen, "%s/uio%u", dirname, *uio_num);
925 /* then try uio:uio%d */
927 *uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
928 if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
929 snprintf(buf, buflen, "%s/uio:uio%u", dirname,
936 /* No uio resource found */
938 PMD_INIT_LOG(ERR, "Could not find uio resource");
946 virtio_has_msix(const struct rte_pci_addr *loc)
949 char dirname[PATH_MAX];
951 snprintf(dirname, sizeof(dirname),
952 SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
953 loc->domain, loc->bus, loc->devid, loc->function);
955 d = opendir(dirname);
962 /* Extract I/O port numbers from sysfs */
963 static int virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
965 char dirname[PATH_MAX];
966 char filename[PATH_MAX];
967 unsigned long start, size;
968 unsigned int uio_num;
970 if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
973 /* get portio size */
974 snprintf(filename, sizeof(filename),
975 "%s/portio/port0/size", dirname);
976 if (parse_sysfs_value(filename, &size) < 0) {
977 PMD_INIT_LOG(ERR, "%s(): cannot parse size",
982 /* get portio start */
983 snprintf(filename, sizeof(filename),
984 "%s/portio/port0/start", dirname);
985 if (parse_sysfs_value(filename, &start) < 0) {
986 PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
990 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
991 pci_dev->mem_resource[0].len = (uint64_t)size;
993 "PCI Port IO found start=0x%lx with size=0x%lx",
997 memset(dirname, 0, sizeof(dirname));
998 snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
999 pci_dev->intr_handle.fd = open(dirname, O_RDWR);
1000 if (pci_dev->intr_handle.fd < 0) {
1001 PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
1002 dirname, strerror(errno));
1006 pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
1007 pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
1012 /* Extract port I/O numbers from proc/ioports */
1013 static int virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
1015 uint16_t start, end;
1023 snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
1024 pci_dev->addr.domain,
1026 pci_dev->addr.devid,
1027 pci_dev->addr.function);
1029 fp = fopen("/proc/ioports", "r");
1031 PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
1035 while (getdelim(&line, &linesz, '\n', fp) > 0) {
1040 n = strcspn(ptr, ":");
1044 while (*left && isspace(*left))
1047 if (!strncmp(left, pci_id, strlen(pci_id))) {
1050 while (*ptr && isspace(*ptr))
1053 sscanf(ptr, "%04hx-%04hx", &start, &end);
1054 size = end - start + 1;
1066 pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
1067 pci_dev->mem_resource[0].len = (uint64_t)size;
1069 "PCI Port IO found start=0x%x with size=0x%x",
1072 /* can't support lsc interrupt without uio */
1073 pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
1078 /* Extract I/O port numbers from sysfs */
1079 static int virtio_resource_init(struct rte_pci_device *pci_dev)
1081 if (virtio_resource_init_by_uio(pci_dev) == 0)
1084 return virtio_resource_init_by_ioports(pci_dev);
1089 virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
1091 /* nic_uio does not enable interrupts, return 0 (false). */
1095 static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
1097 /* no setup required */
1103 * Process Virtio Config changed interrupt and call the callback
1104 * if link state changed.
1107 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1110 struct rte_eth_dev *dev = param;
1111 struct virtio_hw *hw = dev->data->dev_private;
1114 /* Read interrupt status which clears interrupt */
1115 isr = vtpci_isr(hw);
1116 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1118 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1119 PMD_DRV_LOG(ERR, "interrupt enable failed");
1121 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1122 if (virtio_dev_link_update(dev, 0) == 0)
1123 _rte_eth_dev_callback_process(dev,
1124 RTE_ETH_EVENT_INTR_LSC);
1130 rx_func_get(struct rte_eth_dev *eth_dev)
1132 struct virtio_hw *hw = eth_dev->data->dev_private;
1133 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1134 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1136 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1140 * This function is based on probe() function in virtio_pci.c
1141 * It returns 0 on success.
1144 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1146 struct virtio_hw *hw = eth_dev->data->dev_private;
1147 struct virtio_net_config *config;
1148 struct virtio_net_config local_config;
1149 uint32_t offset_conf = sizeof(config->mac);
1150 struct rte_pci_device *pci_dev;
1152 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
1154 eth_dev->dev_ops = &virtio_eth_dev_ops;
1155 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1157 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1158 rx_func_get(eth_dev);
1162 /* Allocate memory for storing MAC addresses */
1163 eth_dev->data->mac_addrs = rte_zmalloc("virtio", ETHER_ADDR_LEN, 0);
1164 if (eth_dev->data->mac_addrs == NULL) {
1166 "Failed to allocate %d bytes needed to store MAC addresses",
1171 pci_dev = eth_dev->pci_dev;
1172 if (virtio_resource_init(pci_dev) < 0)
1175 hw->use_msix = virtio_has_msix(&pci_dev->addr);
1176 hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
1178 /* Reset the device although not necessary at startup */
1181 /* Tell the host we've noticed this device. */
1182 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1184 /* Tell the host we've known how to drive the device. */
1185 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1186 virtio_negotiate_features(hw);
1188 rx_func_get(eth_dev);
1190 /* Setting up rx_header size for the device */
1191 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1192 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1194 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1196 /* Copy the permanent MAC address to: virtio_hw */
1197 virtio_get_hwaddr(hw);
1198 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1199 ð_dev->data->mac_addrs[0]);
1201 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1202 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1203 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1205 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1206 config = &local_config;
1208 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1209 offset_conf += sizeof(config->status);
1212 "VIRTIO_NET_F_STATUS is not supported");
1216 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1217 offset_conf += sizeof(config->max_virtqueue_pairs);
1220 "VIRTIO_NET_F_MQ is not supported");
1221 config->max_virtqueue_pairs = 1;
1224 vtpci_read_dev_config(hw, 0, (uint8_t *)config, offset_conf);
1227 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1228 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1230 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1231 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1233 virtio_dev_cq_queue_setup(eth_dev,
1234 config->max_virtqueue_pairs * 2,
1237 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1238 config->max_virtqueue_pairs);
1239 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1241 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1242 config->mac[0], config->mac[1],
1243 config->mac[2], config->mac[3],
1244 config->mac[4], config->mac[5]);
1246 hw->max_rx_queues = 1;
1247 hw->max_tx_queues = 1;
1250 eth_dev->data->nb_rx_queues = hw->max_rx_queues;
1251 eth_dev->data->nb_tx_queues = hw->max_tx_queues;
1253 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1254 hw->max_rx_queues, hw->max_tx_queues);
1255 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1256 eth_dev->data->port_id, pci_dev->id.vendor_id,
1257 pci_dev->id.device_id);
1259 /* Setup interrupt callback */
1260 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1261 rte_intr_callback_register(&pci_dev->intr_handle,
1262 virtio_interrupt_handler, eth_dev);
1264 virtio_dev_cq_start(eth_dev);
1270 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1272 struct rte_pci_device *pci_dev;
1273 struct virtio_hw *hw = eth_dev->data->dev_private;
1275 PMD_INIT_FUNC_TRACE();
1277 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1280 if (hw->started == 1) {
1281 virtio_dev_stop(eth_dev);
1282 virtio_dev_close(eth_dev);
1284 pci_dev = eth_dev->pci_dev;
1286 eth_dev->dev_ops = NULL;
1287 eth_dev->tx_pkt_burst = NULL;
1288 eth_dev->rx_pkt_burst = NULL;
1293 rte_free(eth_dev->data->mac_addrs);
1294 eth_dev->data->mac_addrs = NULL;
1296 /* reset interrupt callback */
1297 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1298 rte_intr_callback_unregister(&pci_dev->intr_handle,
1299 virtio_interrupt_handler,
1302 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1307 static struct eth_driver rte_virtio_pmd = {
1309 .name = "rte_virtio_pmd",
1310 .id_table = pci_id_virtio_map,
1311 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1313 .eth_dev_init = eth_virtio_dev_init,
1314 .eth_dev_uninit = eth_virtio_dev_uninit,
1315 .dev_private_size = sizeof(struct virtio_hw),
1319 * Driver initialization routine.
1320 * Invoked once at EAL init time.
1321 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1322 * Returns 0 on success.
1325 rte_virtio_pmd_init(const char *name __rte_unused,
1326 const char *param __rte_unused)
1328 if (rte_eal_iopl_init() != 0) {
1329 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1333 rte_eth_driver_register(&rte_virtio_pmd);
1338 * Only 1 queue is supported, no queue release related operation
1341 virtio_dev_rx_queue_release(__rte_unused void *rxq)
1346 virtio_dev_tx_queue_release(__rte_unused void *txq)
1351 * Configure virtio device
1352 * It returns 0 on success.
1355 virtio_dev_configure(struct rte_eth_dev *dev)
1357 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1358 struct virtio_hw *hw = dev->data->dev_private;
1359 struct rte_pci_device *pci_dev = dev->pci_dev;
1361 PMD_INIT_LOG(DEBUG, "configure");
1363 if (rxmode->hw_ip_checksum) {
1364 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1368 hw->vlan_strip = rxmode->hw_vlan_strip;
1370 if (rxmode->hw_vlan_filter
1371 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1373 "vlan filtering not available on this host");
1377 if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
1378 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1379 PMD_DRV_LOG(ERR, "failed to set config vector");
1388 virtio_dev_start(struct rte_eth_dev *dev)
1390 uint16_t nb_queues, i;
1391 struct virtio_hw *hw = dev->data->dev_private;
1392 struct rte_pci_device *pci_dev = dev->pci_dev;
1394 /* check if lsc interrupt feature is enabled */
1395 if ((dev->data->dev_conf.intr_conf.lsc) &&
1396 (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
1397 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1398 PMD_DRV_LOG(ERR, "link status not supported by host");
1402 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1403 PMD_DRV_LOG(ERR, "interrupt enable failed");
1408 /* Initialize Link state */
1409 virtio_dev_link_update(dev, 0);
1411 /* On restart after stop do not touch queues */
1415 /* Do final configuration before rx/tx engine starts */
1416 virtio_dev_rxtx_start(dev);
1417 vtpci_reinit_complete(hw);
1421 /*Notify the backend
1422 *Otherwise the tap backend might already stop its queue due to fullness.
1423 *vhost backend will have no chance to be waked up
1425 nb_queues = dev->data->nb_rx_queues;
1426 if (nb_queues > 1) {
1427 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1431 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1433 for (i = 0; i < nb_queues; i++)
1434 virtqueue_notify(dev->data->rx_queues[i]);
1436 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1438 for (i = 0; i < dev->data->nb_rx_queues; i++)
1439 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1441 for (i = 0; i < dev->data->nb_tx_queues; i++)
1442 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1447 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1449 struct rte_mbuf *buf;
1450 int i, mbuf_num = 0;
1452 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1454 "Before freeing rxq[%d] used and unused buf", i);
1455 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1457 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p",
1458 i, dev->data->rx_queues[i]);
1459 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1460 dev->data->rx_queues[i])) != NULL) {
1461 rte_pktmbuf_free(buf);
1465 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1467 "After freeing rxq[%d] used and unused buf", i);
1468 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
1471 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1473 "Before freeing txq[%d] used and unused bufs",
1475 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1478 while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
1479 dev->data->tx_queues[i])) != NULL) {
1480 rte_pktmbuf_free(buf);
1485 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1487 "After freeing txq[%d] used and unused buf", i);
1488 VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
1493 * Stop device: disable interrupt and mark link down
1496 virtio_dev_stop(struct rte_eth_dev *dev)
1498 struct rte_eth_link link;
1500 PMD_INIT_LOG(DEBUG, "stop");
1502 if (dev->data->dev_conf.intr_conf.lsc)
1503 rte_intr_disable(&dev->pci_dev->intr_handle);
1505 memset(&link, 0, sizeof(link));
1506 virtio_dev_atomic_write_link_status(dev, &link);
1510 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1512 struct rte_eth_link link, old;
1514 struct virtio_hw *hw = dev->data->dev_private;
1515 memset(&link, 0, sizeof(link));
1516 virtio_dev_atomic_read_link_status(dev, &link);
1518 link.link_duplex = FULL_DUPLEX;
1519 link.link_speed = SPEED_10G;
1521 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1522 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1523 vtpci_read_dev_config(hw,
1524 offsetof(struct virtio_net_config, status),
1525 &status, sizeof(status));
1526 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1527 link.link_status = 0;
1528 PMD_INIT_LOG(DEBUG, "Port %d is down",
1529 dev->data->port_id);
1531 link.link_status = 1;
1532 PMD_INIT_LOG(DEBUG, "Port %d is up",
1533 dev->data->port_id);
1536 link.link_status = 1; /* Link up */
1538 virtio_dev_atomic_write_link_status(dev, &link);
1540 return (old.link_status == link.link_status) ? -1 : 0;
1544 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1546 struct virtio_hw *hw = dev->data->dev_private;
1548 dev_info->driver_name = dev->driver->pci_drv.name;
1549 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1550 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1551 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1552 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1553 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1554 dev_info->default_txconf = (struct rte_eth_txconf) {
1555 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1560 * It enables testpmd to collect per queue stats.
1563 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1564 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1565 __rte_unused uint8_t is_rx)
1570 static struct rte_driver rte_virtio_driver = {
1572 .init = rte_virtio_pmd_init,
1575 PMD_REGISTER_DRIVER(rte_virtio_driver);