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
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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24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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_uninit(struct rte_eth_dev *eth_dev);
63 static int virtio_dev_configure(struct rte_eth_dev *dev);
64 static int virtio_dev_start(struct rte_eth_dev *dev);
65 static void virtio_dev_stop(struct rte_eth_dev *dev);
66 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
67 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
68 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
69 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
70 static void virtio_dev_info_get(struct rte_eth_dev *dev,
71 struct rte_eth_dev_info *dev_info);
72 static int virtio_dev_link_update(struct rte_eth_dev *dev,
73 __rte_unused int wait_to_complete);
75 static void virtio_set_hwaddr(struct virtio_hw *hw);
76 static void virtio_get_hwaddr(struct virtio_hw *hw);
78 static void virtio_dev_stats_get(struct rte_eth_dev *dev,
79 struct rte_eth_stats *stats);
80 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
81 struct rte_eth_xstat *xstats, unsigned n);
82 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
83 struct rte_eth_xstat_name *xstats_names,
85 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
86 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
87 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
88 uint16_t vlan_id, int on);
89 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
90 struct ether_addr *mac_addr,
91 uint32_t index, uint32_t vmdq __rte_unused);
92 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
93 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
94 struct ether_addr *mac_addr);
96 static int virtio_dev_queue_stats_mapping_set(
97 __rte_unused struct rte_eth_dev *eth_dev,
98 __rte_unused uint16_t queue_id,
99 __rte_unused uint8_t stat_idx,
100 __rte_unused uint8_t is_rx);
103 * The set of PCI devices this driver supports
105 static const struct rte_pci_id pci_id_virtio_map[] = {
106 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_DEVICEID_MIN) },
107 { .vendor_id = 0, /* sentinel */ },
110 struct rte_virtio_xstats_name_off {
111 char name[RTE_ETH_XSTATS_NAME_SIZE];
115 /* [rt]x_qX_ is prepended to the name string here */
116 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
117 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
118 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
119 {"errors", offsetof(struct virtnet_rx, stats.errors)},
120 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
121 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
122 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
123 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
124 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
125 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
126 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
127 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
128 {"size_1024_1517_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
129 {"size_1518_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
132 /* [rt]x_qX_ is prepended to the name string here */
133 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
134 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
135 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
136 {"errors", offsetof(struct virtnet_tx, stats.errors)},
137 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
138 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
139 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
140 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
141 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
142 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
143 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
144 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
145 {"size_1024_1517_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
146 {"size_1518_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
149 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
150 sizeof(rte_virtio_rxq_stat_strings[0]))
151 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
152 sizeof(rte_virtio_txq_stat_strings[0]))
155 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
156 int *dlen, int pkt_num)
160 virtio_net_ctrl_ack status = ~0;
161 struct virtio_pmd_ctrl result;
162 struct virtqueue *vq;
164 ctrl->status = status;
166 if (!cvq || !cvq->vq) {
167 PMD_INIT_LOG(ERR, "Control queue is not supported.");
171 head = vq->vq_desc_head_idx;
173 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
174 "vq->hw->cvq = %p vq = %p",
175 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
177 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
180 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
181 sizeof(struct virtio_pmd_ctrl));
184 * Format is enforced in qemu code:
185 * One TX packet for header;
186 * At least one TX packet per argument;
187 * One RX packet for ACK.
189 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
190 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
191 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
193 i = vq->vq_ring.desc[head].next;
195 for (k = 0; k < pkt_num; k++) {
196 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
197 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
198 + sizeof(struct virtio_net_ctrl_hdr)
199 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
200 vq->vq_ring.desc[i].len = dlen[k];
203 i = vq->vq_ring.desc[i].next;
206 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
207 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
208 + sizeof(struct virtio_net_ctrl_hdr);
209 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
212 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
214 vq_update_avail_ring(vq, head);
215 vq_update_avail_idx(vq);
217 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
219 virtqueue_notify(vq);
222 while (VIRTQUEUE_NUSED(vq) == 0) {
227 while (VIRTQUEUE_NUSED(vq)) {
228 uint32_t idx, desc_idx, used_idx;
229 struct vring_used_elem *uep;
231 used_idx = (uint32_t)(vq->vq_used_cons_idx
232 & (vq->vq_nentries - 1));
233 uep = &vq->vq_ring.used->ring[used_idx];
234 idx = (uint32_t) uep->id;
237 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
238 desc_idx = vq->vq_ring.desc[desc_idx].next;
242 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
243 vq->vq_desc_head_idx = idx;
245 vq->vq_used_cons_idx++;
249 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
250 vq->vq_free_cnt, vq->vq_desc_head_idx);
252 memcpy(&result, cvq->virtio_net_hdr_mz->addr,
253 sizeof(struct virtio_pmd_ctrl));
255 return result.status;
259 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
261 struct virtio_hw *hw = dev->data->dev_private;
262 struct virtio_pmd_ctrl ctrl;
266 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
267 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
268 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
270 dlen[0] = sizeof(uint16_t);
272 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
274 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
275 "failed, this is too late now...");
283 virtio_dev_queue_release(struct virtqueue *vq)
285 struct virtio_hw *hw;
290 hw->vtpci_ops->del_queue(hw, vq);
292 rte_free(vq->sw_ring);
297 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
300 uint16_t vtpci_queue_idx,
302 unsigned int socket_id,
305 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
306 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
307 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
308 unsigned int vq_size, size;
309 struct virtio_hw *hw = dev->data->dev_private;
310 struct virtnet_rx *rxvq = NULL;
311 struct virtnet_tx *txvq = NULL;
312 struct virtnet_ctl *cvq = NULL;
313 struct virtqueue *vq;
314 const char *queue_names[] = {"rvq", "txq", "cvq"};
315 size_t sz_vq, sz_q = 0, sz_hdr_mz = 0;
316 void *sw_ring = NULL;
319 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
322 * Read the virtqueue size from the Queue Size field
323 * Always power of 2 and if 0 virtqueue does not exist
325 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
326 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
328 PMD_INIT_LOG(ERR, "virtqueue does not exist");
332 if (!rte_is_power_of_2(vq_size)) {
333 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
337 snprintf(vq_name, sizeof(vq_name), "port%d_%s%d",
338 dev->data->port_id, queue_names[queue_type], queue_idx);
340 sz_vq = RTE_ALIGN_CEIL(sizeof(*vq) +
341 vq_size * sizeof(struct vq_desc_extra),
342 RTE_CACHE_LINE_SIZE);
343 if (queue_type == VTNET_RQ) {
344 sz_q = sz_vq + sizeof(*rxvq);
345 } else if (queue_type == VTNET_TQ) {
346 sz_q = sz_vq + sizeof(*txvq);
348 * For each xmit packet, allocate a virtio_net_hdr
349 * and indirect ring elements
351 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
352 } else if (queue_type == VTNET_CQ) {
353 sz_q = sz_vq + sizeof(*cvq);
354 /* Allocate a page for control vq command, data and status */
355 sz_hdr_mz = PAGE_SIZE;
358 vq = rte_zmalloc_socket(vq_name, sz_q, RTE_CACHE_LINE_SIZE, socket_id);
360 PMD_INIT_LOG(ERR, "can not allocate vq");
364 vq->vq_queue_index = vtpci_queue_idx;
365 vq->vq_nentries = vq_size;
367 if (nb_desc == 0 || nb_desc > vq_size)
369 vq->vq_free_cnt = nb_desc;
372 * Reserve a memzone for vring elements
374 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
375 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
376 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
377 size, vq->vq_ring_size);
379 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, socket_id,
380 0, VIRTIO_PCI_VRING_ALIGN);
382 if (rte_errno == EEXIST)
383 mz = rte_memzone_lookup(vq_name);
390 memset(mz->addr, 0, sizeof(mz->len));
392 vq->vq_ring_mem = mz->phys_addr;
393 vq->vq_ring_virt_mem = mz->addr;
394 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
395 (uint64_t)mz->phys_addr);
396 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
397 (uint64_t)(uintptr_t)mz->addr);
400 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_%s%d_hdr",
401 dev->data->port_id, queue_names[queue_type],
403 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
405 RTE_CACHE_LINE_SIZE);
406 if (hdr_mz == NULL) {
407 if (rte_errno == EEXIST)
408 hdr_mz = rte_memzone_lookup(vq_hdr_name);
409 if (hdr_mz == NULL) {
416 if (queue_type == VTNET_RQ) {
417 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
418 sizeof(vq->sw_ring[0]);
420 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
421 RTE_CACHE_LINE_SIZE, socket_id);
423 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
428 vq->sw_ring = sw_ring;
429 rxvq = (struct virtnet_rx *)RTE_PTR_ADD(vq, sz_vq);
431 rxvq->port_id = dev->data->port_id;
432 rxvq->queue_id = queue_idx;
435 } else if (queue_type == VTNET_TQ) {
436 txvq = (struct virtnet_tx *)RTE_PTR_ADD(vq, sz_vq);
438 txvq->port_id = dev->data->port_id;
439 txvq->queue_id = queue_idx;
441 txvq->virtio_net_hdr_mz = hdr_mz;
442 txvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
445 } else if (queue_type == VTNET_CQ) {
446 cvq = (struct virtnet_ctl *)RTE_PTR_ADD(vq, sz_vq);
449 cvq->virtio_net_hdr_mz = hdr_mz;
450 cvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
451 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
455 /* For virtio-user case (that is when dev->pci_dev is NULL), we use
456 * virtual address. And we need properly set _offset_, please see
457 * MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
460 vq->offset = offsetof(struct rte_mbuf, buf_physaddr);
462 vq->vq_ring_mem = (uintptr_t)mz->addr;
463 vq->offset = offsetof(struct rte_mbuf, buf_addr);
464 if (queue_type == VTNET_TQ)
465 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
466 else if (queue_type == VTNET_CQ)
467 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
470 if (queue_type == VTNET_TQ) {
471 struct virtio_tx_region *txr;
475 memset(txr, 0, vq_size * sizeof(*txr));
476 for (i = 0; i < vq_size; i++) {
477 struct vring_desc *start_dp = txr[i].tx_indir;
479 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
481 /* first indirect descriptor is always the tx header */
482 start_dp->addr = txvq->virtio_net_hdr_mem
484 + offsetof(struct virtio_tx_region, tx_hdr);
486 start_dp->len = hw->vtnet_hdr_size;
487 start_dp->flags = VRING_DESC_F_NEXT;
491 if (hw->vtpci_ops->setup_queue(hw, vq) < 0) {
492 PMD_INIT_LOG(ERR, "setup_queue failed");
493 virtio_dev_queue_release(vq);
502 rte_memzone_free(hdr_mz);
503 rte_memzone_free(mz);
510 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
513 struct virtnet_ctl *cvq;
515 struct virtio_hw *hw = dev->data->dev_private;
517 PMD_INIT_FUNC_TRACE();
518 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
519 vtpci_queue_idx, 0, socket_id, (void **)&cvq);
521 PMD_INIT_LOG(ERR, "control vq initialization failed");
530 virtio_free_queues(struct rte_eth_dev *dev)
534 for (i = 0; i < dev->data->nb_rx_queues; i++)
535 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
537 dev->data->nb_rx_queues = 0;
539 for (i = 0; i < dev->data->nb_tx_queues; i++)
540 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
542 dev->data->nb_tx_queues = 0;
546 virtio_dev_close(struct rte_eth_dev *dev)
548 struct virtio_hw *hw = dev->data->dev_private;
550 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
552 if (hw->started == 1)
553 virtio_dev_stop(dev);
556 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
557 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
559 virtio_dev_free_mbufs(dev);
560 virtio_free_queues(dev);
564 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
566 struct virtio_hw *hw = dev->data->dev_private;
567 struct virtio_pmd_ctrl ctrl;
571 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
572 PMD_INIT_LOG(INFO, "host does not support rx control\n");
576 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
577 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
581 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
583 PMD_INIT_LOG(ERR, "Failed to enable promisc");
587 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
589 struct virtio_hw *hw = dev->data->dev_private;
590 struct virtio_pmd_ctrl ctrl;
594 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
595 PMD_INIT_LOG(INFO, "host does not support rx control\n");
599 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
600 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
604 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
606 PMD_INIT_LOG(ERR, "Failed to disable promisc");
610 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
612 struct virtio_hw *hw = dev->data->dev_private;
613 struct virtio_pmd_ctrl ctrl;
617 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
618 PMD_INIT_LOG(INFO, "host does not support rx control\n");
622 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
623 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
627 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
629 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
633 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
635 struct virtio_hw *hw = dev->data->dev_private;
636 struct virtio_pmd_ctrl ctrl;
640 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
641 PMD_INIT_LOG(INFO, "host does not support rx control\n");
645 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
646 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
650 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
652 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
656 * dev_ops for virtio, bare necessities for basic operation
658 static const struct eth_dev_ops virtio_eth_dev_ops = {
659 .dev_configure = virtio_dev_configure,
660 .dev_start = virtio_dev_start,
661 .dev_stop = virtio_dev_stop,
662 .dev_close = virtio_dev_close,
663 .promiscuous_enable = virtio_dev_promiscuous_enable,
664 .promiscuous_disable = virtio_dev_promiscuous_disable,
665 .allmulticast_enable = virtio_dev_allmulticast_enable,
666 .allmulticast_disable = virtio_dev_allmulticast_disable,
668 .dev_infos_get = virtio_dev_info_get,
669 .stats_get = virtio_dev_stats_get,
670 .xstats_get = virtio_dev_xstats_get,
671 .xstats_get_names = virtio_dev_xstats_get_names,
672 .stats_reset = virtio_dev_stats_reset,
673 .xstats_reset = virtio_dev_stats_reset,
674 .link_update = virtio_dev_link_update,
675 .rx_queue_setup = virtio_dev_rx_queue_setup,
676 .rx_queue_release = virtio_dev_rx_queue_release,
677 .tx_queue_setup = virtio_dev_tx_queue_setup,
678 .tx_queue_release = virtio_dev_tx_queue_release,
679 /* collect stats per queue */
680 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
681 .vlan_filter_set = virtio_vlan_filter_set,
682 .mac_addr_add = virtio_mac_addr_add,
683 .mac_addr_remove = virtio_mac_addr_remove,
684 .mac_addr_set = virtio_mac_addr_set,
688 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
689 struct rte_eth_link *link)
691 struct rte_eth_link *dst = link;
692 struct rte_eth_link *src = &(dev->data->dev_link);
694 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
695 *(uint64_t *)src) == 0)
702 * Atomically writes the link status information into global
703 * structure rte_eth_dev.
706 * - Pointer to the structure rte_eth_dev to read from.
707 * - Pointer to the buffer to be saved with the link status.
710 * - On success, zero.
711 * - On failure, negative value.
714 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
715 struct rte_eth_link *link)
717 struct rte_eth_link *dst = &(dev->data->dev_link);
718 struct rte_eth_link *src = link;
720 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
721 *(uint64_t *)src) == 0)
728 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
732 for (i = 0; i < dev->data->nb_tx_queues; i++) {
733 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
737 stats->opackets += txvq->stats.packets;
738 stats->obytes += txvq->stats.bytes;
739 stats->oerrors += txvq->stats.errors;
741 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
742 stats->q_opackets[i] = txvq->stats.packets;
743 stats->q_obytes[i] = txvq->stats.bytes;
747 for (i = 0; i < dev->data->nb_rx_queues; i++) {
748 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
752 stats->ipackets += rxvq->stats.packets;
753 stats->ibytes += rxvq->stats.bytes;
754 stats->ierrors += rxvq->stats.errors;
756 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
757 stats->q_ipackets[i] = rxvq->stats.packets;
758 stats->q_ibytes[i] = rxvq->stats.bytes;
762 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
765 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
766 struct rte_eth_xstat_name *xstats_names,
767 __rte_unused unsigned limit)
773 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
774 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
776 if (xstats_names != NULL) {
777 /* Note: limit checked in rte_eth_xstats_names() */
779 for (i = 0; i < dev->data->nb_rx_queues; i++) {
780 struct virtqueue *rxvq = dev->data->rx_queues[i];
783 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
784 snprintf(xstats_names[count].name,
785 sizeof(xstats_names[count].name),
787 rte_virtio_rxq_stat_strings[t].name);
792 for (i = 0; i < dev->data->nb_tx_queues; i++) {
793 struct virtqueue *txvq = dev->data->tx_queues[i];
796 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
797 snprintf(xstats_names[count].name,
798 sizeof(xstats_names[count].name),
800 rte_virtio_txq_stat_strings[t].name);
810 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
816 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
817 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
822 for (i = 0; i < dev->data->nb_rx_queues; i++) {
823 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
830 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
831 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
832 rte_virtio_rxq_stat_strings[t].offset);
837 for (i = 0; i < dev->data->nb_tx_queues; i++) {
838 struct virtnet_tx *txvq = dev->data->tx_queues[i];
845 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
846 xstats[count].value = *(uint64_t *)(((char *)txvq) +
847 rte_virtio_txq_stat_strings[t].offset);
856 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
858 virtio_update_stats(dev, stats);
862 virtio_dev_stats_reset(struct rte_eth_dev *dev)
866 for (i = 0; i < dev->data->nb_tx_queues; i++) {
867 struct virtnet_tx *txvq = dev->data->tx_queues[i];
871 txvq->stats.packets = 0;
872 txvq->stats.bytes = 0;
873 txvq->stats.errors = 0;
874 txvq->stats.multicast = 0;
875 txvq->stats.broadcast = 0;
876 memset(txvq->stats.size_bins, 0,
877 sizeof(txvq->stats.size_bins[0]) * 8);
880 for (i = 0; i < dev->data->nb_rx_queues; i++) {
881 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
885 rxvq->stats.packets = 0;
886 rxvq->stats.bytes = 0;
887 rxvq->stats.errors = 0;
888 rxvq->stats.multicast = 0;
889 rxvq->stats.broadcast = 0;
890 memset(rxvq->stats.size_bins, 0,
891 sizeof(rxvq->stats.size_bins[0]) * 8);
896 virtio_set_hwaddr(struct virtio_hw *hw)
898 vtpci_write_dev_config(hw,
899 offsetof(struct virtio_net_config, mac),
900 &hw->mac_addr, ETHER_ADDR_LEN);
904 virtio_get_hwaddr(struct virtio_hw *hw)
906 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
907 vtpci_read_dev_config(hw,
908 offsetof(struct virtio_net_config, mac),
909 &hw->mac_addr, ETHER_ADDR_LEN);
911 eth_random_addr(&hw->mac_addr[0]);
912 virtio_set_hwaddr(hw);
917 virtio_mac_table_set(struct virtio_hw *hw,
918 const struct virtio_net_ctrl_mac *uc,
919 const struct virtio_net_ctrl_mac *mc)
921 struct virtio_pmd_ctrl ctrl;
924 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
925 PMD_DRV_LOG(INFO, "host does not support mac table");
929 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
930 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
932 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
933 memcpy(ctrl.data, uc, len[0]);
935 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
936 memcpy(ctrl.data + len[0], mc, len[1]);
938 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
940 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
944 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
945 uint32_t index, uint32_t vmdq __rte_unused)
947 struct virtio_hw *hw = dev->data->dev_private;
948 const struct ether_addr *addrs = dev->data->mac_addrs;
950 struct virtio_net_ctrl_mac *uc, *mc;
952 if (index >= VIRTIO_MAX_MAC_ADDRS) {
953 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
957 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
959 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
962 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
963 const struct ether_addr *addr
964 = (i == index) ? mac_addr : addrs + i;
965 struct virtio_net_ctrl_mac *tbl
966 = is_multicast_ether_addr(addr) ? mc : uc;
968 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
971 virtio_mac_table_set(hw, uc, mc);
975 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
977 struct virtio_hw *hw = dev->data->dev_private;
978 struct ether_addr *addrs = dev->data->mac_addrs;
979 struct virtio_net_ctrl_mac *uc, *mc;
982 if (index >= VIRTIO_MAX_MAC_ADDRS) {
983 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
987 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
989 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
992 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
993 struct virtio_net_ctrl_mac *tbl;
995 if (i == index || is_zero_ether_addr(addrs + i))
998 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
999 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1002 virtio_mac_table_set(hw, uc, mc);
1006 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1008 struct virtio_hw *hw = dev->data->dev_private;
1010 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1012 /* Use atomic update if available */
1013 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1014 struct virtio_pmd_ctrl ctrl;
1015 int len = ETHER_ADDR_LEN;
1017 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1018 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1020 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1021 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1022 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1023 virtio_set_hwaddr(hw);
1027 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1029 struct virtio_hw *hw = dev->data->dev_private;
1030 struct virtio_pmd_ctrl ctrl;
1033 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1036 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1037 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1038 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1039 len = sizeof(vlan_id);
1041 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1045 virtio_negotiate_features(struct virtio_hw *hw)
1047 uint64_t host_features;
1049 /* Prepare guest_features: feature that driver wants to support */
1050 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
1051 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1052 hw->guest_features);
1054 /* Read device(host) feature bits */
1055 host_features = hw->vtpci_ops->get_features(hw);
1056 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1060 * Negotiate features: Subset of device feature bits are written back
1061 * guest feature bits.
1063 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1064 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1065 hw->guest_features);
1068 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1070 "VIRTIO_F_VERSION_1 features is not enabled.");
1073 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1074 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1076 "failed to set FEATURES_OK status!");
1085 * Process Virtio Config changed interrupt and call the callback
1086 * if link state changed.
1089 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1092 struct rte_eth_dev *dev = param;
1093 struct virtio_hw *hw = dev->data->dev_private;
1096 /* Read interrupt status which clears interrupt */
1097 isr = vtpci_isr(hw);
1098 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1100 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1101 PMD_DRV_LOG(ERR, "interrupt enable failed");
1103 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1104 if (virtio_dev_link_update(dev, 0) == 0)
1105 _rte_eth_dev_callback_process(dev,
1106 RTE_ETH_EVENT_INTR_LSC);
1112 rx_func_get(struct rte_eth_dev *eth_dev)
1114 struct virtio_hw *hw = eth_dev->data->dev_private;
1115 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1116 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1118 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1122 * This function is based on probe() function in virtio_pci.c
1123 * It returns 0 on success.
1126 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1128 struct virtio_hw *hw = eth_dev->data->dev_private;
1129 struct virtio_net_config *config;
1130 struct virtio_net_config local_config;
1131 struct rte_pci_device *pci_dev;
1132 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1135 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1137 eth_dev->dev_ops = &virtio_eth_dev_ops;
1138 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1140 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1141 rx_func_get(eth_dev);
1145 /* Allocate memory for storing MAC addresses */
1146 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1147 if (eth_dev->data->mac_addrs == NULL) {
1149 "Failed to allocate %d bytes needed to store MAC addresses",
1150 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1154 pci_dev = eth_dev->pci_dev;
1157 ret = vtpci_init(pci_dev, hw, &dev_flags);
1162 /* Reset the device although not necessary at startup */
1165 /* Tell the host we've noticed this device. */
1166 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1168 /* Tell the host we've known how to drive the device. */
1169 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1170 if (virtio_negotiate_features(hw) < 0)
1173 /* If host does not support status then disable LSC */
1174 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1175 dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1177 rte_eth_copy_pci_info(eth_dev, pci_dev);
1178 eth_dev->data->dev_flags = dev_flags;
1180 rx_func_get(eth_dev);
1182 /* Setting up rx_header size for the device */
1183 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1184 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1185 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1187 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1189 /* Copy the permanent MAC address to: virtio_hw */
1190 virtio_get_hwaddr(hw);
1191 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1192 ð_dev->data->mac_addrs[0]);
1194 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1195 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1196 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1198 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1199 config = &local_config;
1201 vtpci_read_dev_config(hw,
1202 offsetof(struct virtio_net_config, mac),
1203 &config->mac, sizeof(config->mac));
1205 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1206 vtpci_read_dev_config(hw,
1207 offsetof(struct virtio_net_config, status),
1208 &config->status, sizeof(config->status));
1211 "VIRTIO_NET_F_STATUS is not supported");
1215 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1216 vtpci_read_dev_config(hw,
1217 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1218 &config->max_virtqueue_pairs,
1219 sizeof(config->max_virtqueue_pairs));
1222 "VIRTIO_NET_F_MQ is not supported");
1223 config->max_virtqueue_pairs = 1;
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 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1251 hw->max_rx_queues, hw->max_tx_queues);
1253 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1254 eth_dev->data->port_id, pci_dev->id.vendor_id,
1255 pci_dev->id.device_id);
1257 /* Setup interrupt callback */
1258 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1259 rte_intr_callback_register(&pci_dev->intr_handle,
1260 virtio_interrupt_handler, eth_dev);
1262 virtio_dev_cq_start(eth_dev);
1268 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1270 struct rte_pci_device *pci_dev;
1271 struct virtio_hw *hw = eth_dev->data->dev_private;
1273 PMD_INIT_FUNC_TRACE();
1275 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1278 /* Close it anyway since there's no way to know if closed */
1279 virtio_dev_close(eth_dev);
1281 pci_dev = eth_dev->pci_dev;
1283 eth_dev->dev_ops = NULL;
1284 eth_dev->tx_pkt_burst = NULL;
1285 eth_dev->rx_pkt_burst = NULL;
1288 virtio_dev_queue_release(hw->cvq->vq);
1290 rte_free(eth_dev->data->mac_addrs);
1291 eth_dev->data->mac_addrs = NULL;
1293 /* reset interrupt callback */
1294 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1295 rte_intr_callback_unregister(&pci_dev->intr_handle,
1296 virtio_interrupt_handler,
1298 rte_eal_pci_unmap_device(pci_dev);
1300 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1305 static struct eth_driver rte_virtio_pmd = {
1307 .name = "rte_virtio_pmd",
1308 .id_table = pci_id_virtio_map,
1309 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1311 .eth_dev_init = eth_virtio_dev_init,
1312 .eth_dev_uninit = eth_virtio_dev_uninit,
1313 .dev_private_size = sizeof(struct virtio_hw),
1317 * Driver initialization routine.
1318 * Invoked once at EAL init time.
1319 * Register itself as the [Poll Mode] Driver of PCI virtio devices.
1320 * Returns 0 on success.
1323 rte_virtio_pmd_init(const char *name __rte_unused,
1324 const char *param __rte_unused)
1326 if (rte_eal_iopl_init() != 0) {
1327 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1331 rte_eth_driver_register(&rte_virtio_pmd);
1336 * Configure virtio device
1337 * It returns 0 on success.
1340 virtio_dev_configure(struct rte_eth_dev *dev)
1342 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1343 struct virtio_hw *hw = dev->data->dev_private;
1345 PMD_INIT_LOG(DEBUG, "configure");
1347 if (rxmode->hw_ip_checksum) {
1348 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1352 hw->vlan_strip = rxmode->hw_vlan_strip;
1354 if (rxmode->hw_vlan_filter
1355 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1357 "vlan filtering not available on this host");
1361 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1362 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1363 PMD_DRV_LOG(ERR, "failed to set config vector");
1372 virtio_dev_start(struct rte_eth_dev *dev)
1374 uint16_t nb_queues, i;
1375 struct virtio_hw *hw = dev->data->dev_private;
1376 struct virtnet_rx *rxvq;
1377 struct virtnet_tx *txvq __rte_unused;
1379 /* check if lsc interrupt feature is enabled */
1380 if (dev->data->dev_conf.intr_conf.lsc) {
1381 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1382 PMD_DRV_LOG(ERR, "link status not supported by host");
1386 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1387 PMD_DRV_LOG(ERR, "interrupt enable failed");
1392 /* Initialize Link state */
1393 virtio_dev_link_update(dev, 0);
1395 /* On restart after stop do not touch queues */
1399 /* Do final configuration before rx/tx engine starts */
1400 virtio_dev_rxtx_start(dev);
1401 vtpci_reinit_complete(hw);
1405 /*Notify the backend
1406 *Otherwise the tap backend might already stop its queue due to fullness.
1407 *vhost backend will have no chance to be waked up
1409 nb_queues = dev->data->nb_rx_queues;
1410 if (nb_queues > 1) {
1411 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1415 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1417 for (i = 0; i < nb_queues; i++) {
1418 rxvq = dev->data->rx_queues[i];
1419 virtqueue_notify(rxvq->vq);
1422 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1424 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1425 rxvq = dev->data->rx_queues[i];
1426 VIRTQUEUE_DUMP(rxvq->vq);
1429 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1430 txvq = dev->data->tx_queues[i];
1431 VIRTQUEUE_DUMP(txvq->vq);
1437 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1439 struct rte_mbuf *buf;
1440 int i, mbuf_num = 0;
1442 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1443 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1446 "Before freeing rxq[%d] used and unused buf", i);
1447 VIRTQUEUE_DUMP(rxvq->vq);
1449 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1450 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1451 rte_pktmbuf_free(buf);
1455 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1457 "After freeing rxq[%d] used and unused buf", i);
1458 VIRTQUEUE_DUMP(rxvq->vq);
1461 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1462 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1465 "Before freeing txq[%d] used and unused bufs",
1467 VIRTQUEUE_DUMP(txvq->vq);
1470 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1471 rte_pktmbuf_free(buf);
1475 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1477 "After freeing txq[%d] used and unused buf", i);
1478 VIRTQUEUE_DUMP(txvq->vq);
1483 * Stop device: disable interrupt and mark link down
1486 virtio_dev_stop(struct rte_eth_dev *dev)
1488 struct rte_eth_link link;
1489 struct virtio_hw *hw = dev->data->dev_private;
1491 PMD_INIT_LOG(DEBUG, "stop");
1495 if (dev->data->dev_conf.intr_conf.lsc)
1496 rte_intr_disable(&dev->pci_dev->intr_handle);
1498 memset(&link, 0, sizeof(link));
1499 virtio_dev_atomic_write_link_status(dev, &link);
1503 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1505 struct rte_eth_link link, old;
1507 struct virtio_hw *hw = dev->data->dev_private;
1508 memset(&link, 0, sizeof(link));
1509 virtio_dev_atomic_read_link_status(dev, &link);
1511 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1512 link.link_speed = SPEED_10G;
1514 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1515 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1516 vtpci_read_dev_config(hw,
1517 offsetof(struct virtio_net_config, status),
1518 &status, sizeof(status));
1519 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1520 link.link_status = ETH_LINK_DOWN;
1521 PMD_INIT_LOG(DEBUG, "Port %d is down",
1522 dev->data->port_id);
1524 link.link_status = ETH_LINK_UP;
1525 PMD_INIT_LOG(DEBUG, "Port %d is up",
1526 dev->data->port_id);
1529 link.link_status = ETH_LINK_UP;
1531 virtio_dev_atomic_write_link_status(dev, &link);
1533 return (old.link_status == link.link_status) ? -1 : 0;
1537 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1539 struct virtio_hw *hw = dev->data->dev_private;
1542 dev_info->driver_name = dev->driver->pci_drv.name;
1544 dev_info->driver_name = "virtio-user PMD";
1545 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1546 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1547 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1548 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1549 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1550 dev_info->default_txconf = (struct rte_eth_txconf) {
1551 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1556 * It enables testpmd to collect per queue stats.
1559 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1560 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1561 __rte_unused uint8_t is_rx)
1566 static struct rte_driver rte_virtio_driver = {
1568 .init = rte_virtio_pmd_init,
1571 PMD_REGISTER_DRIVER(rte_virtio_driver, virtio_net);
1572 DRIVER_REGISTER_PCI_TABLE(virtio_net, pci_id_virtio_map);