4 * Copyright(c) 2010-2016 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
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40 #include <rte_ethdev.h>
41 #include <rte_memcpy.h>
42 #include <rte_string_fns.h>
43 #include <rte_memzone.h>
44 #include <rte_malloc.h>
45 #include <rte_atomic.h>
46 #include <rte_branch_prediction.h>
48 #include <rte_ether.h>
49 #include <rte_common.h>
50 #include <rte_errno.h>
52 #include <rte_memory.h>
56 #include "virtio_ethdev.h"
57 #include "virtio_pci.h"
58 #include "virtio_logs.h"
59 #include "virtqueue.h"
60 #include "virtio_rxtx.h"
62 static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
63 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
64 static int virtio_dev_configure(struct rte_eth_dev *dev);
65 static int virtio_dev_start(struct rte_eth_dev *dev);
66 static void virtio_dev_stop(struct rte_eth_dev *dev);
67 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
68 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
69 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
70 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
71 static void virtio_dev_info_get(struct rte_eth_dev *dev,
72 struct rte_eth_dev_info *dev_info);
73 static int virtio_dev_link_update(struct rte_eth_dev *dev,
74 __rte_unused int wait_to_complete);
76 static void virtio_set_hwaddr(struct virtio_hw *hw);
77 static void virtio_get_hwaddr(struct virtio_hw *hw);
79 static void virtio_dev_stats_get(struct rte_eth_dev *dev,
80 struct rte_eth_stats *stats);
81 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
82 struct rte_eth_xstat *xstats, unsigned n);
83 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
84 struct rte_eth_xstat_name *xstats_names,
86 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
87 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
88 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
89 uint16_t vlan_id, int on);
90 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
91 struct ether_addr *mac_addr,
92 uint32_t index, uint32_t vmdq __rte_unused);
93 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
94 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
95 struct ether_addr *mac_addr);
97 static int virtio_dev_queue_stats_mapping_set(
98 __rte_unused struct rte_eth_dev *eth_dev,
99 __rte_unused uint16_t queue_id,
100 __rte_unused uint8_t stat_idx,
101 __rte_unused uint8_t is_rx);
104 * The set of PCI devices this driver supports
106 static const struct rte_pci_id pci_id_virtio_map[] = {
108 #define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
109 #include "rte_pci_dev_ids.h"
111 { .vendor_id = 0, /* sentinel */ },
114 struct rte_virtio_xstats_name_off {
115 char name[RTE_ETH_XSTATS_NAME_SIZE];
119 /* [rt]x_qX_ is prepended to the name string here */
120 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
121 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
122 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
123 {"errors", offsetof(struct virtnet_rx, stats.errors)},
124 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
125 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
126 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
127 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
128 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
129 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
130 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
131 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
132 {"size_1024_1517_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
133 {"size_1518_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
136 /* [rt]x_qX_ is prepended to the name string here */
137 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
138 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
139 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
140 {"errors", offsetof(struct virtnet_tx, stats.errors)},
141 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
142 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
143 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
144 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
145 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
146 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
147 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
148 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
149 {"size_1024_1517_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
150 {"size_1518_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
153 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
154 sizeof(rte_virtio_rxq_stat_strings[0]))
155 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
156 sizeof(rte_virtio_txq_stat_strings[0]))
159 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
160 int *dlen, int pkt_num)
164 virtio_net_ctrl_ack status = ~0;
165 struct virtio_pmd_ctrl result;
166 struct virtqueue *vq;
168 ctrl->status = status;
170 if (!cvq && !cvq->vq) {
171 PMD_INIT_LOG(ERR, "Control queue is not supported.");
175 head = vq->vq_desc_head_idx;
177 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
178 "vq->hw->cvq = %p vq = %p",
179 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
181 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
184 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
185 sizeof(struct virtio_pmd_ctrl));
188 * Format is enforced in qemu code:
189 * One TX packet for header;
190 * At least one TX packet per argument;
191 * One RX packet for ACK.
193 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
194 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mz->phys_addr;
195 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
197 i = vq->vq_ring.desc[head].next;
199 for (k = 0; k < pkt_num; k++) {
200 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
201 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mz->phys_addr
202 + sizeof(struct virtio_net_ctrl_hdr)
203 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
204 vq->vq_ring.desc[i].len = dlen[k];
207 i = vq->vq_ring.desc[i].next;
210 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
211 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mz->phys_addr
212 + sizeof(struct virtio_net_ctrl_hdr);
213 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
216 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
218 vq_update_avail_ring(vq, head);
219 vq_update_avail_idx(vq);
221 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
223 virtqueue_notify(vq);
226 while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
231 while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
232 uint32_t idx, desc_idx, used_idx;
233 struct vring_used_elem *uep;
235 used_idx = (uint32_t)(vq->vq_used_cons_idx
236 & (vq->vq_nentries - 1));
237 uep = &vq->vq_ring.used->ring[used_idx];
238 idx = (uint32_t) uep->id;
241 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
242 desc_idx = vq->vq_ring.desc[desc_idx].next;
246 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
247 vq->vq_desc_head_idx = idx;
249 vq->vq_used_cons_idx++;
253 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
254 vq->vq_free_cnt, vq->vq_desc_head_idx);
256 memcpy(&result, cvq->virtio_net_hdr_mz->addr,
257 sizeof(struct virtio_pmd_ctrl));
259 return result.status;
263 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
265 struct virtio_hw *hw = dev->data->dev_private;
266 struct virtio_pmd_ctrl ctrl;
270 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
271 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
272 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
274 dlen[0] = sizeof(uint16_t);
276 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
278 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
279 "failed, this is too late now...");
287 virtio_dev_queue_release(struct virtqueue *vq)
289 struct virtio_hw *hw;
294 hw->vtpci_ops->del_queue(hw, vq);
296 rte_free(vq->sw_ring);
301 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
304 uint16_t vtpci_queue_idx,
306 unsigned int socket_id,
309 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
310 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
311 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
312 unsigned int vq_size, size;
313 struct virtio_hw *hw = dev->data->dev_private;
314 struct virtnet_rx *rxvq;
315 struct virtnet_tx *txvq;
316 struct virtnet_ctl *cvq;
317 struct virtqueue *vq;
318 const char *queue_names[] = {"rvq", "txq", "cvq"};
319 size_t sz_vq, sz_q = 0, sz_hdr_mz = 0;
320 void *sw_ring = NULL;
323 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
326 * Read the virtqueue size from the Queue Size field
327 * Always power of 2 and if 0 virtqueue does not exist
329 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
330 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
332 PMD_INIT_LOG(ERR, "virtqueue does not exist");
336 if (!rte_is_power_of_2(vq_size)) {
337 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
341 snprintf(vq_name, sizeof(vq_name), "port%d_%s%d",
342 dev->data->port_id, queue_names[queue_type], queue_idx);
344 sz_vq = RTE_ALIGN_CEIL(sizeof(*vq) +
345 vq_size * sizeof(struct vq_desc_extra),
346 RTE_CACHE_LINE_SIZE);
347 if (queue_type == VTNET_RQ) {
348 sz_q = sz_vq + sizeof(*rxvq);
349 } else if (queue_type == VTNET_TQ) {
350 sz_q = sz_vq + sizeof(*txvq);
352 * For each xmit packet, allocate a virtio_net_hdr
353 * and indirect ring elements
355 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
356 } else if (queue_type == VTNET_CQ) {
357 sz_q = sz_vq + sizeof(*cvq);
358 /* Allocate a page for control vq command, data and status */
359 sz_hdr_mz = PAGE_SIZE;
362 vq = rte_zmalloc_socket(vq_name, sz_q, RTE_CACHE_LINE_SIZE, socket_id);
364 PMD_INIT_LOG(ERR, "can not allocate vq");
368 vq->vq_queue_index = vtpci_queue_idx;
369 vq->vq_nentries = vq_size;
371 if (nb_desc == 0 || nb_desc > vq_size)
373 vq->vq_free_cnt = nb_desc;
376 * Reserve a memzone for vring elements
378 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
379 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
380 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
381 size, vq->vq_ring_size);
383 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, socket_id,
384 0, VIRTIO_PCI_VRING_ALIGN);
386 if (rte_errno == EEXIST)
387 mz = rte_memzone_lookup(vq_name);
395 * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
396 * and only accepts 32 bit page frame number.
397 * Check if the allocated physical memory exceeds 16TB.
399 if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
400 PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
404 memset(mz->addr, 0, sizeof(mz->len));
406 vq->vq_ring_mem = mz->phys_addr;
407 vq->vq_ring_virt_mem = mz->addr;
408 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
409 (uint64_t)mz->phys_addr);
410 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
411 (uint64_t)(uintptr_t)mz->addr);
414 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_%s%d_hdr",
415 dev->data->port_id, queue_names[queue_type],
417 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
419 RTE_CACHE_LINE_SIZE);
420 if (hdr_mz == NULL) {
421 if (rte_errno == EEXIST)
422 hdr_mz = rte_memzone_lookup(vq_hdr_name);
423 if (hdr_mz == NULL) {
430 if (queue_type == VTNET_RQ) {
431 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
432 sizeof(vq->sw_ring[0]);
434 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
435 RTE_CACHE_LINE_SIZE, socket_id);
437 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
442 vq->sw_ring = sw_ring;
443 rxvq = (struct virtnet_rx *)RTE_PTR_ADD(vq, sz_vq);
445 rxvq->port_id = dev->data->port_id;
446 rxvq->queue_id = queue_idx;
449 } else if (queue_type == VTNET_TQ) {
450 struct virtio_tx_region *txr;
453 txvq = (struct virtnet_tx *)RTE_PTR_ADD(vq, sz_vq);
455 txvq->port_id = dev->data->port_id;
456 txvq->queue_id = queue_idx;
458 txvq->virtio_net_hdr_mz = hdr_mz;
459 txvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
462 memset(txr, 0, vq_size * sizeof(*txr));
463 for (i = 0; i < vq_size; i++) {
464 struct vring_desc *start_dp = txr[i].tx_indir;
466 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
468 /* first indirect descriptor is always the tx header */
469 start_dp->addr = txvq->virtio_net_hdr_mem
471 + offsetof(struct virtio_tx_region, tx_hdr);
473 start_dp->len = hw->vtnet_hdr_size;
474 start_dp->flags = VRING_DESC_F_NEXT;
478 } else if (queue_type == VTNET_CQ) {
479 cvq = (struct virtnet_ctl *)RTE_PTR_ADD(vq, sz_vq);
482 cvq->virtio_net_hdr_mz = hdr_mz;
483 cvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
484 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
488 hw->vtpci_ops->setup_queue(hw, vq);
494 rte_memzone_free(hdr_mz);
495 rte_memzone_free(mz);
502 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
505 struct virtnet_ctl *cvq;
507 struct virtio_hw *hw = dev->data->dev_private;
509 PMD_INIT_FUNC_TRACE();
510 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
511 vtpci_queue_idx, 0, socket_id, (void **)&cvq);
513 PMD_INIT_LOG(ERR, "control vq initialization failed");
522 virtio_free_queues(struct rte_eth_dev *dev)
526 for (i = 0; i < dev->data->nb_rx_queues; i++)
527 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
529 dev->data->nb_rx_queues = 0;
531 for (i = 0; i < dev->data->nb_tx_queues; i++)
532 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
534 dev->data->nb_tx_queues = 0;
538 virtio_dev_close(struct rte_eth_dev *dev)
540 struct virtio_hw *hw = dev->data->dev_private;
542 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
544 if (hw->started == 1)
545 virtio_dev_stop(dev);
548 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
549 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
551 virtio_dev_free_mbufs(dev);
552 virtio_free_queues(dev);
556 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
558 struct virtio_hw *hw = dev->data->dev_private;
559 struct virtio_pmd_ctrl ctrl;
563 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
564 PMD_INIT_LOG(INFO, "host does not support rx control\n");
568 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
569 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
573 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
575 PMD_INIT_LOG(ERR, "Failed to enable promisc");
579 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
581 struct virtio_hw *hw = dev->data->dev_private;
582 struct virtio_pmd_ctrl ctrl;
586 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
587 PMD_INIT_LOG(INFO, "host does not support rx control\n");
591 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
592 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
596 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
598 PMD_INIT_LOG(ERR, "Failed to disable promisc");
602 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
604 struct virtio_hw *hw = dev->data->dev_private;
605 struct virtio_pmd_ctrl ctrl;
609 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
610 PMD_INIT_LOG(INFO, "host does not support rx control\n");
614 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
615 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
619 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
621 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
625 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
627 struct virtio_hw *hw = dev->data->dev_private;
628 struct virtio_pmd_ctrl ctrl;
632 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
633 PMD_INIT_LOG(INFO, "host does not support rx control\n");
637 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
638 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
642 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
644 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
648 * dev_ops for virtio, bare necessities for basic operation
650 static const struct eth_dev_ops virtio_eth_dev_ops = {
651 .dev_configure = virtio_dev_configure,
652 .dev_start = virtio_dev_start,
653 .dev_stop = virtio_dev_stop,
654 .dev_close = virtio_dev_close,
655 .promiscuous_enable = virtio_dev_promiscuous_enable,
656 .promiscuous_disable = virtio_dev_promiscuous_disable,
657 .allmulticast_enable = virtio_dev_allmulticast_enable,
658 .allmulticast_disable = virtio_dev_allmulticast_disable,
660 .dev_infos_get = virtio_dev_info_get,
661 .stats_get = virtio_dev_stats_get,
662 .xstats_get = virtio_dev_xstats_get,
663 .xstats_get_names = virtio_dev_xstats_get_names,
664 .stats_reset = virtio_dev_stats_reset,
665 .xstats_reset = virtio_dev_stats_reset,
666 .link_update = virtio_dev_link_update,
667 .rx_queue_setup = virtio_dev_rx_queue_setup,
668 .rx_queue_release = virtio_dev_rx_queue_release,
669 .tx_queue_setup = virtio_dev_tx_queue_setup,
670 .tx_queue_release = virtio_dev_tx_queue_release,
671 /* collect stats per queue */
672 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
673 .vlan_filter_set = virtio_vlan_filter_set,
674 .mac_addr_add = virtio_mac_addr_add,
675 .mac_addr_remove = virtio_mac_addr_remove,
676 .mac_addr_set = virtio_mac_addr_set,
680 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
681 struct rte_eth_link *link)
683 struct rte_eth_link *dst = link;
684 struct rte_eth_link *src = &(dev->data->dev_link);
686 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
687 *(uint64_t *)src) == 0)
694 * Atomically writes the link status information into global
695 * structure rte_eth_dev.
698 * - Pointer to the structure rte_eth_dev to read from.
699 * - Pointer to the buffer to be saved with the link status.
702 * - On success, zero.
703 * - On failure, negative value.
706 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
707 struct rte_eth_link *link)
709 struct rte_eth_link *dst = &(dev->data->dev_link);
710 struct rte_eth_link *src = link;
712 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
713 *(uint64_t *)src) == 0)
720 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
724 for (i = 0; i < dev->data->nb_tx_queues; i++) {
725 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
729 stats->opackets += txvq->stats.packets;
730 stats->obytes += txvq->stats.bytes;
731 stats->oerrors += txvq->stats.errors;
733 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
734 stats->q_opackets[i] = txvq->stats.packets;
735 stats->q_obytes[i] = txvq->stats.bytes;
739 for (i = 0; i < dev->data->nb_rx_queues; i++) {
740 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
744 stats->ipackets += rxvq->stats.packets;
745 stats->ibytes += rxvq->stats.bytes;
746 stats->ierrors += rxvq->stats.errors;
748 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
749 stats->q_ipackets[i] = rxvq->stats.packets;
750 stats->q_ibytes[i] = rxvq->stats.bytes;
754 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
757 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
758 struct rte_eth_xstat_name *xstats_names,
759 __rte_unused unsigned limit)
765 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
766 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
768 if (xstats_names == NULL) {
769 /* Note: limit checked in rte_eth_xstats_names() */
771 for (i = 0; i < dev->data->nb_rx_queues; i++) {
772 struct virtqueue *rxvq = dev->data->rx_queues[i];
775 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
776 snprintf(xstats_names[count].name,
777 sizeof(xstats_names[count].name),
779 rte_virtio_rxq_stat_strings[t].name);
780 xstats_names[count].id = count;
785 for (i = 0; i < dev->data->nb_tx_queues; i++) {
786 struct virtqueue *txvq = dev->data->tx_queues[i];
789 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
790 snprintf(xstats_names[count].name,
791 sizeof(xstats_names[count].name),
793 rte_virtio_txq_stat_strings[t].name);
794 xstats_names[count].id = count;
804 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
810 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
811 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
816 for (i = 0; i < dev->data->nb_rx_queues; i++) {
817 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
824 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
825 xstats[count].id = count;
826 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
827 rte_virtio_rxq_stat_strings[t].offset);
832 for (i = 0; i < dev->data->nb_tx_queues; i++) {
833 struct virtnet_tx *txvq = dev->data->tx_queues[i];
840 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
841 xstats[count].id = count;
842 xstats[count].value = *(uint64_t *)(((char *)txvq) +
843 rte_virtio_txq_stat_strings[t].offset);
852 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
854 virtio_update_stats(dev, stats);
858 virtio_dev_stats_reset(struct rte_eth_dev *dev)
862 for (i = 0; i < dev->data->nb_tx_queues; i++) {
863 struct virtnet_tx *txvq = dev->data->tx_queues[i];
867 txvq->stats.packets = 0;
868 txvq->stats.bytes = 0;
869 txvq->stats.errors = 0;
870 txvq->stats.multicast = 0;
871 txvq->stats.broadcast = 0;
872 memset(txvq->stats.size_bins, 0,
873 sizeof(txvq->stats.size_bins[0]) * 8);
876 for (i = 0; i < dev->data->nb_rx_queues; i++) {
877 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
881 rxvq->stats.packets = 0;
882 rxvq->stats.bytes = 0;
883 rxvq->stats.errors = 0;
884 rxvq->stats.multicast = 0;
885 rxvq->stats.broadcast = 0;
886 memset(rxvq->stats.size_bins, 0,
887 sizeof(rxvq->stats.size_bins[0]) * 8);
892 virtio_set_hwaddr(struct virtio_hw *hw)
894 vtpci_write_dev_config(hw,
895 offsetof(struct virtio_net_config, mac),
896 &hw->mac_addr, ETHER_ADDR_LEN);
900 virtio_get_hwaddr(struct virtio_hw *hw)
902 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
903 vtpci_read_dev_config(hw,
904 offsetof(struct virtio_net_config, mac),
905 &hw->mac_addr, ETHER_ADDR_LEN);
907 eth_random_addr(&hw->mac_addr[0]);
908 virtio_set_hwaddr(hw);
913 virtio_mac_table_set(struct virtio_hw *hw,
914 const struct virtio_net_ctrl_mac *uc,
915 const struct virtio_net_ctrl_mac *mc)
917 struct virtio_pmd_ctrl ctrl;
920 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
921 PMD_DRV_LOG(INFO, "host does not support mac table");
925 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
926 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
928 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
929 memcpy(ctrl.data, uc, len[0]);
931 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
932 memcpy(ctrl.data + len[0], mc, len[1]);
934 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
936 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
940 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
941 uint32_t index, uint32_t vmdq __rte_unused)
943 struct virtio_hw *hw = dev->data->dev_private;
944 const struct ether_addr *addrs = dev->data->mac_addrs;
946 struct virtio_net_ctrl_mac *uc, *mc;
948 if (index >= VIRTIO_MAX_MAC_ADDRS) {
949 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
953 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
955 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
958 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
959 const struct ether_addr *addr
960 = (i == index) ? mac_addr : addrs + i;
961 struct virtio_net_ctrl_mac *tbl
962 = is_multicast_ether_addr(addr) ? mc : uc;
964 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
967 virtio_mac_table_set(hw, uc, mc);
971 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
973 struct virtio_hw *hw = dev->data->dev_private;
974 struct ether_addr *addrs = dev->data->mac_addrs;
975 struct virtio_net_ctrl_mac *uc, *mc;
978 if (index >= VIRTIO_MAX_MAC_ADDRS) {
979 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
983 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
985 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
988 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
989 struct virtio_net_ctrl_mac *tbl;
991 if (i == index || is_zero_ether_addr(addrs + i))
994 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
995 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
998 virtio_mac_table_set(hw, uc, mc);
1002 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1004 struct virtio_hw *hw = dev->data->dev_private;
1006 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1008 /* Use atomic update if available */
1009 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1010 struct virtio_pmd_ctrl ctrl;
1011 int len = ETHER_ADDR_LEN;
1013 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1014 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1016 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1017 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1018 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1019 virtio_set_hwaddr(hw);
1023 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1025 struct virtio_hw *hw = dev->data->dev_private;
1026 struct virtio_pmd_ctrl ctrl;
1029 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1032 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1033 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1034 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1035 len = sizeof(vlan_id);
1037 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1041 virtio_negotiate_features(struct virtio_hw *hw)
1043 uint64_t host_features;
1045 /* Prepare guest_features: feature that driver wants to support */
1046 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
1047 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1048 hw->guest_features);
1050 /* Read device(host) feature bits */
1051 host_features = hw->vtpci_ops->get_features(hw);
1052 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1056 * Negotiate features: Subset of device feature bits are written back
1057 * guest feature bits.
1059 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1060 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1061 hw->guest_features);
1064 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1066 "VIRTIO_F_VERSION_1 features is not enabled.");
1069 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1070 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1072 "failed to set FEATURES_OK status!");
1081 * Process Virtio Config changed interrupt and call the callback
1082 * if link state changed.
1085 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1088 struct rte_eth_dev *dev = param;
1089 struct virtio_hw *hw = dev->data->dev_private;
1092 /* Read interrupt status which clears interrupt */
1093 isr = vtpci_isr(hw);
1094 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1096 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1097 PMD_DRV_LOG(ERR, "interrupt enable failed");
1099 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1100 if (virtio_dev_link_update(dev, 0) == 0)
1101 _rte_eth_dev_callback_process(dev,
1102 RTE_ETH_EVENT_INTR_LSC);
1108 rx_func_get(struct rte_eth_dev *eth_dev)
1110 struct virtio_hw *hw = eth_dev->data->dev_private;
1111 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1112 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1114 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1118 * This function is based on probe() function in virtio_pci.c
1119 * It returns 0 on success.
1122 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1124 struct virtio_hw *hw = eth_dev->data->dev_private;
1125 struct virtio_net_config *config;
1126 struct virtio_net_config local_config;
1127 struct rte_pci_device *pci_dev;
1128 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1131 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1133 eth_dev->dev_ops = &virtio_eth_dev_ops;
1134 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1136 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1137 rx_func_get(eth_dev);
1141 /* Allocate memory for storing MAC addresses */
1142 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1143 if (eth_dev->data->mac_addrs == NULL) {
1145 "Failed to allocate %d bytes needed to store MAC addresses",
1146 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1150 pci_dev = eth_dev->pci_dev;
1152 ret = vtpci_init(pci_dev, hw, &dev_flags);
1156 /* Reset the device although not necessary at startup */
1159 /* Tell the host we've noticed this device. */
1160 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1162 /* Tell the host we've known how to drive the device. */
1163 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1164 if (virtio_negotiate_features(hw) < 0)
1167 /* If host does not support status then disable LSC */
1168 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1169 dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1171 rte_eth_copy_pci_info(eth_dev, pci_dev);
1172 eth_dev->data->dev_flags = dev_flags;
1174 rx_func_get(eth_dev);
1176 /* Setting up rx_header size for the device */
1177 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1178 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1179 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1181 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1183 /* Copy the permanent MAC address to: virtio_hw */
1184 virtio_get_hwaddr(hw);
1185 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1186 ð_dev->data->mac_addrs[0]);
1188 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1189 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1190 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1192 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1193 config = &local_config;
1195 vtpci_read_dev_config(hw,
1196 offsetof(struct virtio_net_config, mac),
1197 &config->mac, sizeof(config->mac));
1199 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1200 vtpci_read_dev_config(hw,
1201 offsetof(struct virtio_net_config, status),
1202 &config->status, sizeof(config->status));
1205 "VIRTIO_NET_F_STATUS is not supported");
1209 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1210 vtpci_read_dev_config(hw,
1211 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1212 &config->max_virtqueue_pairs,
1213 sizeof(config->max_virtqueue_pairs));
1216 "VIRTIO_NET_F_MQ is not supported");
1217 config->max_virtqueue_pairs = 1;
1221 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1222 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1224 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1225 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1227 virtio_dev_cq_queue_setup(eth_dev,
1228 config->max_virtqueue_pairs * 2,
1231 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1232 config->max_virtqueue_pairs);
1233 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1235 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1236 config->mac[0], config->mac[1],
1237 config->mac[2], config->mac[3],
1238 config->mac[4], config->mac[5]);
1240 hw->max_rx_queues = 1;
1241 hw->max_tx_queues = 1;
1244 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1245 hw->max_rx_queues, hw->max_tx_queues);
1246 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1247 eth_dev->data->port_id, pci_dev->id.vendor_id,
1248 pci_dev->id.device_id);
1250 /* Setup interrupt callback */
1251 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1252 rte_intr_callback_register(&pci_dev->intr_handle,
1253 virtio_interrupt_handler, eth_dev);
1255 virtio_dev_cq_start(eth_dev);
1261 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1263 struct rte_pci_device *pci_dev;
1264 struct virtio_hw *hw = eth_dev->data->dev_private;
1266 PMD_INIT_FUNC_TRACE();
1268 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1271 /* Close it anyway since there's no way to know if closed */
1272 virtio_dev_close(eth_dev);
1274 pci_dev = eth_dev->pci_dev;
1276 eth_dev->dev_ops = NULL;
1277 eth_dev->tx_pkt_burst = NULL;
1278 eth_dev->rx_pkt_burst = NULL;
1281 virtio_dev_queue_release(hw->cvq->vq);
1283 rte_free(eth_dev->data->mac_addrs);
1284 eth_dev->data->mac_addrs = NULL;
1286 /* reset interrupt callback */
1287 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1288 rte_intr_callback_unregister(&pci_dev->intr_handle,
1289 virtio_interrupt_handler,
1291 rte_eal_pci_unmap_device(pci_dev);
1293 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1298 static struct eth_driver rte_virtio_pmd = {
1300 .name = "rte_virtio_pmd",
1301 .id_table = pci_id_virtio_map,
1302 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1304 .eth_dev_init = eth_virtio_dev_init,
1305 .eth_dev_uninit = eth_virtio_dev_uninit,
1306 .dev_private_size = sizeof(struct virtio_hw),
1310 * Driver initialization routine.
1311 * Invoked once at EAL init time.
1312 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1313 * Returns 0 on success.
1316 rte_virtio_pmd_init(const char *name __rte_unused,
1317 const char *param __rte_unused)
1319 if (rte_eal_iopl_init() != 0) {
1320 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1324 rte_eth_driver_register(&rte_virtio_pmd);
1329 * Configure virtio device
1330 * It returns 0 on success.
1333 virtio_dev_configure(struct rte_eth_dev *dev)
1335 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1336 struct virtio_hw *hw = dev->data->dev_private;
1338 PMD_INIT_LOG(DEBUG, "configure");
1340 if (rxmode->hw_ip_checksum) {
1341 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1345 hw->vlan_strip = rxmode->hw_vlan_strip;
1347 if (rxmode->hw_vlan_filter
1348 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1350 "vlan filtering not available on this host");
1354 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1355 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1356 PMD_DRV_LOG(ERR, "failed to set config vector");
1365 virtio_dev_start(struct rte_eth_dev *dev)
1367 uint16_t nb_queues, i;
1368 struct virtio_hw *hw = dev->data->dev_private;
1369 struct virtnet_rx *rxvq;
1370 struct virtnet_tx *txvq __rte_unused;
1372 /* check if lsc interrupt feature is enabled */
1373 if (dev->data->dev_conf.intr_conf.lsc) {
1374 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1375 PMD_DRV_LOG(ERR, "link status not supported by host");
1379 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1380 PMD_DRV_LOG(ERR, "interrupt enable failed");
1385 /* Initialize Link state */
1386 virtio_dev_link_update(dev, 0);
1388 /* On restart after stop do not touch queues */
1392 /* Do final configuration before rx/tx engine starts */
1393 virtio_dev_rxtx_start(dev);
1394 vtpci_reinit_complete(hw);
1398 /*Notify the backend
1399 *Otherwise the tap backend might already stop its queue due to fullness.
1400 *vhost backend will have no chance to be waked up
1402 nb_queues = dev->data->nb_rx_queues;
1403 if (nb_queues > 1) {
1404 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1408 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1410 for (i = 0; i < nb_queues; i++) {
1411 rxvq = dev->data->rx_queues[i];
1412 virtqueue_notify(rxvq->vq);
1415 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1417 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1418 rxvq = dev->data->rx_queues[i];
1419 VIRTQUEUE_DUMP(rxvq->vq);
1422 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1423 txvq = dev->data->tx_queues[i];
1424 VIRTQUEUE_DUMP(txvq->vq);
1430 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1432 struct rte_mbuf *buf;
1433 int i, mbuf_num = 0;
1435 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1436 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1439 "Before freeing rxq[%d] used and unused buf", i);
1440 VIRTQUEUE_DUMP(rxvq->vq);
1442 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1443 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1444 rte_pktmbuf_free(buf);
1448 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1450 "After freeing rxq[%d] used and unused buf", i);
1451 VIRTQUEUE_DUMP(rxvq->vq);
1454 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1455 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1458 "Before freeing txq[%d] used and unused bufs",
1460 VIRTQUEUE_DUMP(txvq->vq);
1463 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1464 rte_pktmbuf_free(buf);
1468 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1470 "After freeing txq[%d] used and unused buf", i);
1471 VIRTQUEUE_DUMP(txvq->vq);
1476 * Stop device: disable interrupt and mark link down
1479 virtio_dev_stop(struct rte_eth_dev *dev)
1481 struct rte_eth_link link;
1482 struct virtio_hw *hw = dev->data->dev_private;
1484 PMD_INIT_LOG(DEBUG, "stop");
1488 if (dev->data->dev_conf.intr_conf.lsc)
1489 rte_intr_disable(&dev->pci_dev->intr_handle);
1491 memset(&link, 0, sizeof(link));
1492 virtio_dev_atomic_write_link_status(dev, &link);
1496 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1498 struct rte_eth_link link, old;
1500 struct virtio_hw *hw = dev->data->dev_private;
1501 memset(&link, 0, sizeof(link));
1502 virtio_dev_atomic_read_link_status(dev, &link);
1504 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1505 link.link_speed = SPEED_10G;
1507 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1508 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1509 vtpci_read_dev_config(hw,
1510 offsetof(struct virtio_net_config, status),
1511 &status, sizeof(status));
1512 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1513 link.link_status = ETH_LINK_DOWN;
1514 PMD_INIT_LOG(DEBUG, "Port %d is down",
1515 dev->data->port_id);
1517 link.link_status = ETH_LINK_UP;
1518 PMD_INIT_LOG(DEBUG, "Port %d is up",
1519 dev->data->port_id);
1522 link.link_status = ETH_LINK_UP;
1524 virtio_dev_atomic_write_link_status(dev, &link);
1526 return (old.link_status == link.link_status) ? -1 : 0;
1530 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1532 struct virtio_hw *hw = dev->data->dev_private;
1534 dev_info->driver_name = dev->driver->pci_drv.name;
1535 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1536 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1537 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1538 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1539 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1540 dev_info->default_txconf = (struct rte_eth_txconf) {
1541 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1546 * It enables testpmd to collect per queue stats.
1549 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1550 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1551 __rte_unused uint8_t is_rx)
1556 static struct rte_driver rte_virtio_driver = {
1558 .init = rte_virtio_pmd_init,
1561 PMD_REGISTER_DRIVER(rte_virtio_driver);