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
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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_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
129 {"size_1519_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_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
146 {"size_1519_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 * VIRTIO_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");
655 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
657 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
659 struct virtio_hw *hw = dev->data->dev_private;
660 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
662 uint32_t frame_size = mtu + ether_hdr_len;
664 if (mtu < ETHER_MIN_MTU || frame_size > VIRTIO_MAX_RX_PKTLEN) {
665 PMD_INIT_LOG(ERR, "MTU should be between %d and %d\n",
666 ETHER_MIN_MTU, VIRTIO_MAX_RX_PKTLEN - ether_hdr_len);
673 * dev_ops for virtio, bare necessities for basic operation
675 static const struct eth_dev_ops virtio_eth_dev_ops = {
676 .dev_configure = virtio_dev_configure,
677 .dev_start = virtio_dev_start,
678 .dev_stop = virtio_dev_stop,
679 .dev_close = virtio_dev_close,
680 .promiscuous_enable = virtio_dev_promiscuous_enable,
681 .promiscuous_disable = virtio_dev_promiscuous_disable,
682 .allmulticast_enable = virtio_dev_allmulticast_enable,
683 .allmulticast_disable = virtio_dev_allmulticast_disable,
684 .mtu_set = virtio_mtu_set,
685 .dev_infos_get = virtio_dev_info_get,
686 .stats_get = virtio_dev_stats_get,
687 .xstats_get = virtio_dev_xstats_get,
688 .xstats_get_names = virtio_dev_xstats_get_names,
689 .stats_reset = virtio_dev_stats_reset,
690 .xstats_reset = virtio_dev_stats_reset,
691 .link_update = virtio_dev_link_update,
692 .rx_queue_setup = virtio_dev_rx_queue_setup,
693 .rx_queue_release = virtio_dev_rx_queue_release,
694 .tx_queue_setup = virtio_dev_tx_queue_setup,
695 .tx_queue_release = virtio_dev_tx_queue_release,
696 /* collect stats per queue */
697 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
698 .vlan_filter_set = virtio_vlan_filter_set,
699 .mac_addr_add = virtio_mac_addr_add,
700 .mac_addr_remove = virtio_mac_addr_remove,
701 .mac_addr_set = virtio_mac_addr_set,
705 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
706 struct rte_eth_link *link)
708 struct rte_eth_link *dst = link;
709 struct rte_eth_link *src = &(dev->data->dev_link);
711 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
712 *(uint64_t *)src) == 0)
719 * Atomically writes the link status information into global
720 * structure rte_eth_dev.
723 * - Pointer to the structure rte_eth_dev to read from.
724 * - Pointer to the buffer to be saved with the link status.
727 * - On success, zero.
728 * - On failure, negative value.
731 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
732 struct rte_eth_link *link)
734 struct rte_eth_link *dst = &(dev->data->dev_link);
735 struct rte_eth_link *src = link;
737 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
738 *(uint64_t *)src) == 0)
745 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
749 for (i = 0; i < dev->data->nb_tx_queues; i++) {
750 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
754 stats->opackets += txvq->stats.packets;
755 stats->obytes += txvq->stats.bytes;
756 stats->oerrors += txvq->stats.errors;
758 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
759 stats->q_opackets[i] = txvq->stats.packets;
760 stats->q_obytes[i] = txvq->stats.bytes;
764 for (i = 0; i < dev->data->nb_rx_queues; i++) {
765 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
769 stats->ipackets += rxvq->stats.packets;
770 stats->ibytes += rxvq->stats.bytes;
771 stats->ierrors += rxvq->stats.errors;
773 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
774 stats->q_ipackets[i] = rxvq->stats.packets;
775 stats->q_ibytes[i] = rxvq->stats.bytes;
779 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
782 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
783 struct rte_eth_xstat_name *xstats_names,
784 __rte_unused unsigned limit)
790 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
791 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
793 if (xstats_names != NULL) {
794 /* Note: limit checked in rte_eth_xstats_names() */
796 for (i = 0; i < dev->data->nb_rx_queues; i++) {
797 struct virtqueue *rxvq = dev->data->rx_queues[i];
800 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
801 snprintf(xstats_names[count].name,
802 sizeof(xstats_names[count].name),
804 rte_virtio_rxq_stat_strings[t].name);
809 for (i = 0; i < dev->data->nb_tx_queues; i++) {
810 struct virtqueue *txvq = dev->data->tx_queues[i];
813 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
814 snprintf(xstats_names[count].name,
815 sizeof(xstats_names[count].name),
817 rte_virtio_txq_stat_strings[t].name);
827 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
833 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
834 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
839 for (i = 0; i < dev->data->nb_rx_queues; i++) {
840 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
847 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
848 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
849 rte_virtio_rxq_stat_strings[t].offset);
854 for (i = 0; i < dev->data->nb_tx_queues; i++) {
855 struct virtnet_tx *txvq = dev->data->tx_queues[i];
862 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
863 xstats[count].value = *(uint64_t *)(((char *)txvq) +
864 rte_virtio_txq_stat_strings[t].offset);
873 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
875 virtio_update_stats(dev, stats);
879 virtio_dev_stats_reset(struct rte_eth_dev *dev)
883 for (i = 0; i < dev->data->nb_tx_queues; i++) {
884 struct virtnet_tx *txvq = dev->data->tx_queues[i];
888 txvq->stats.packets = 0;
889 txvq->stats.bytes = 0;
890 txvq->stats.errors = 0;
891 txvq->stats.multicast = 0;
892 txvq->stats.broadcast = 0;
893 memset(txvq->stats.size_bins, 0,
894 sizeof(txvq->stats.size_bins[0]) * 8);
897 for (i = 0; i < dev->data->nb_rx_queues; i++) {
898 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
902 rxvq->stats.packets = 0;
903 rxvq->stats.bytes = 0;
904 rxvq->stats.errors = 0;
905 rxvq->stats.multicast = 0;
906 rxvq->stats.broadcast = 0;
907 memset(rxvq->stats.size_bins, 0,
908 sizeof(rxvq->stats.size_bins[0]) * 8);
913 virtio_set_hwaddr(struct virtio_hw *hw)
915 vtpci_write_dev_config(hw,
916 offsetof(struct virtio_net_config, mac),
917 &hw->mac_addr, ETHER_ADDR_LEN);
921 virtio_get_hwaddr(struct virtio_hw *hw)
923 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
924 vtpci_read_dev_config(hw,
925 offsetof(struct virtio_net_config, mac),
926 &hw->mac_addr, ETHER_ADDR_LEN);
928 eth_random_addr(&hw->mac_addr[0]);
929 virtio_set_hwaddr(hw);
934 virtio_mac_table_set(struct virtio_hw *hw,
935 const struct virtio_net_ctrl_mac *uc,
936 const struct virtio_net_ctrl_mac *mc)
938 struct virtio_pmd_ctrl ctrl;
941 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
942 PMD_DRV_LOG(INFO, "host does not support mac table");
946 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
947 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
949 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
950 memcpy(ctrl.data, uc, len[0]);
952 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
953 memcpy(ctrl.data + len[0], mc, len[1]);
955 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
957 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
961 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
962 uint32_t index, uint32_t vmdq __rte_unused)
964 struct virtio_hw *hw = dev->data->dev_private;
965 const struct ether_addr *addrs = dev->data->mac_addrs;
967 struct virtio_net_ctrl_mac *uc, *mc;
969 if (index >= VIRTIO_MAX_MAC_ADDRS) {
970 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
974 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
976 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
979 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
980 const struct ether_addr *addr
981 = (i == index) ? mac_addr : addrs + i;
982 struct virtio_net_ctrl_mac *tbl
983 = is_multicast_ether_addr(addr) ? mc : uc;
985 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
988 virtio_mac_table_set(hw, uc, mc);
992 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
994 struct virtio_hw *hw = dev->data->dev_private;
995 struct ether_addr *addrs = dev->data->mac_addrs;
996 struct virtio_net_ctrl_mac *uc, *mc;
999 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1000 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1004 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1006 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1009 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1010 struct virtio_net_ctrl_mac *tbl;
1012 if (i == index || is_zero_ether_addr(addrs + i))
1015 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1016 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1019 virtio_mac_table_set(hw, uc, mc);
1023 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1025 struct virtio_hw *hw = dev->data->dev_private;
1027 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1029 /* Use atomic update if available */
1030 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1031 struct virtio_pmd_ctrl ctrl;
1032 int len = ETHER_ADDR_LEN;
1034 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1035 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1037 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1038 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1039 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1040 virtio_set_hwaddr(hw);
1044 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1046 struct virtio_hw *hw = dev->data->dev_private;
1047 struct virtio_pmd_ctrl ctrl;
1050 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1053 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1054 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1055 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1056 len = sizeof(vlan_id);
1058 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1062 virtio_negotiate_features(struct virtio_hw *hw)
1064 uint64_t host_features;
1066 /* Prepare guest_features: feature that driver wants to support */
1067 hw->guest_features = VIRTIO_PMD_GUEST_FEATURES;
1068 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1069 hw->guest_features);
1071 /* Read device(host) feature bits */
1072 host_features = hw->vtpci_ops->get_features(hw);
1073 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1077 * Negotiate features: Subset of device feature bits are written back
1078 * guest feature bits.
1080 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1081 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1082 hw->guest_features);
1085 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1087 "VIRTIO_F_VERSION_1 features is not enabled.");
1090 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1091 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1093 "failed to set FEATURES_OK status!");
1102 * Process Virtio Config changed interrupt and call the callback
1103 * if link state changed.
1106 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1109 struct rte_eth_dev *dev = param;
1110 struct virtio_hw *hw = dev->data->dev_private;
1113 /* Read interrupt status which clears interrupt */
1114 isr = vtpci_isr(hw);
1115 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1117 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1118 PMD_DRV_LOG(ERR, "interrupt enable failed");
1120 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1121 if (virtio_dev_link_update(dev, 0) == 0)
1122 _rte_eth_dev_callback_process(dev,
1123 RTE_ETH_EVENT_INTR_LSC);
1129 rx_func_get(struct rte_eth_dev *eth_dev)
1131 struct virtio_hw *hw = eth_dev->data->dev_private;
1132 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1133 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1135 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1139 * This function is based on probe() function in virtio_pci.c
1140 * It returns 0 on success.
1143 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1145 struct virtio_hw *hw = eth_dev->data->dev_private;
1146 struct virtio_net_config *config;
1147 struct virtio_net_config local_config;
1148 struct rte_pci_device *pci_dev;
1149 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1152 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
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", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1164 if (eth_dev->data->mac_addrs == NULL) {
1166 "Failed to allocate %d bytes needed to store MAC addresses",
1167 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1171 pci_dev = eth_dev->pci_dev;
1174 ret = vtpci_init(pci_dev, hw, &dev_flags);
1179 /* Reset the device although not necessary at startup */
1182 /* Tell the host we've noticed this device. */
1183 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1185 /* Tell the host we've known how to drive the device. */
1186 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1187 if (virtio_negotiate_features(hw) < 0)
1190 /* If host does not support status then disable LSC */
1191 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1192 dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1194 rte_eth_copy_pci_info(eth_dev, pci_dev);
1195 eth_dev->data->dev_flags = dev_flags;
1197 rx_func_get(eth_dev);
1199 /* Setting up rx_header size for the device */
1200 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1201 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1202 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1204 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1206 /* Copy the permanent MAC address to: virtio_hw */
1207 virtio_get_hwaddr(hw);
1208 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1209 ð_dev->data->mac_addrs[0]);
1211 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1212 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1213 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1215 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1216 config = &local_config;
1218 vtpci_read_dev_config(hw,
1219 offsetof(struct virtio_net_config, mac),
1220 &config->mac, sizeof(config->mac));
1222 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1223 vtpci_read_dev_config(hw,
1224 offsetof(struct virtio_net_config, status),
1225 &config->status, sizeof(config->status));
1228 "VIRTIO_NET_F_STATUS is not supported");
1232 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1233 vtpci_read_dev_config(hw,
1234 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1235 &config->max_virtqueue_pairs,
1236 sizeof(config->max_virtqueue_pairs));
1239 "VIRTIO_NET_F_MQ is not supported");
1240 config->max_virtqueue_pairs = 1;
1244 (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
1245 VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
1247 (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
1248 VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
1250 virtio_dev_cq_queue_setup(eth_dev,
1251 config->max_virtqueue_pairs * 2,
1254 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1255 config->max_virtqueue_pairs);
1256 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1258 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1259 config->mac[0], config->mac[1],
1260 config->mac[2], config->mac[3],
1261 config->mac[4], config->mac[5]);
1263 hw->max_rx_queues = 1;
1264 hw->max_tx_queues = 1;
1267 PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
1268 hw->max_rx_queues, hw->max_tx_queues);
1270 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1271 eth_dev->data->port_id, pci_dev->id.vendor_id,
1272 pci_dev->id.device_id);
1274 /* Setup interrupt callback */
1275 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1276 rte_intr_callback_register(&pci_dev->intr_handle,
1277 virtio_interrupt_handler, eth_dev);
1279 virtio_dev_cq_start(eth_dev);
1285 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1287 struct rte_pci_device *pci_dev;
1288 struct virtio_hw *hw = eth_dev->data->dev_private;
1290 PMD_INIT_FUNC_TRACE();
1292 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1295 /* Close it anyway since there's no way to know if closed */
1296 virtio_dev_close(eth_dev);
1298 pci_dev = eth_dev->pci_dev;
1300 eth_dev->dev_ops = NULL;
1301 eth_dev->tx_pkt_burst = NULL;
1302 eth_dev->rx_pkt_burst = NULL;
1305 virtio_dev_queue_release(hw->cvq->vq);
1307 rte_free(eth_dev->data->mac_addrs);
1308 eth_dev->data->mac_addrs = NULL;
1310 /* reset interrupt callback */
1311 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1312 rte_intr_callback_unregister(&pci_dev->intr_handle,
1313 virtio_interrupt_handler,
1315 rte_eal_pci_unmap_device(pci_dev);
1317 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1322 static struct eth_driver rte_virtio_pmd = {
1324 .id_table = pci_id_virtio_map,
1325 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1326 .probe = rte_eth_dev_pci_probe,
1327 .remove = rte_eth_dev_pci_remove,
1329 .eth_dev_init = eth_virtio_dev_init,
1330 .eth_dev_uninit = eth_virtio_dev_uninit,
1331 .dev_private_size = sizeof(struct virtio_hw),
1334 RTE_INIT(rte_virtio_pmd_init);
1336 rte_virtio_pmd_init(void)
1338 if (rte_eal_iopl_init() != 0) {
1339 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1343 rte_eal_pci_register(&rte_virtio_pmd.pci_drv);
1347 * Configure virtio device
1348 * It returns 0 on success.
1351 virtio_dev_configure(struct rte_eth_dev *dev)
1353 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1354 struct virtio_hw *hw = dev->data->dev_private;
1356 PMD_INIT_LOG(DEBUG, "configure");
1358 if (rxmode->hw_ip_checksum) {
1359 PMD_DRV_LOG(ERR, "HW IP checksum not supported");
1363 hw->vlan_strip = rxmode->hw_vlan_strip;
1365 if (rxmode->hw_vlan_filter
1366 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1368 "vlan filtering not available on this host");
1372 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1373 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1374 PMD_DRV_LOG(ERR, "failed to set config vector");
1383 virtio_dev_start(struct rte_eth_dev *dev)
1385 uint16_t nb_queues, i;
1386 struct virtio_hw *hw = dev->data->dev_private;
1387 struct virtnet_rx *rxvq;
1388 struct virtnet_tx *txvq __rte_unused;
1390 /* check if lsc interrupt feature is enabled */
1391 if (dev->data->dev_conf.intr_conf.lsc) {
1392 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1393 PMD_DRV_LOG(ERR, "link status not supported by host");
1397 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1398 PMD_DRV_LOG(ERR, "interrupt enable failed");
1403 /* Initialize Link state */
1404 virtio_dev_link_update(dev, 0);
1406 /* On restart after stop do not touch queues */
1410 /* Do final configuration before rx/tx engine starts */
1411 virtio_dev_rxtx_start(dev);
1412 vtpci_reinit_complete(hw);
1416 /*Notify the backend
1417 *Otherwise the tap backend might already stop its queue due to fullness.
1418 *vhost backend will have no chance to be waked up
1420 nb_queues = dev->data->nb_rx_queues;
1421 if (nb_queues > 1) {
1422 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1426 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1428 for (i = 0; i < nb_queues; i++) {
1429 rxvq = dev->data->rx_queues[i];
1430 virtqueue_notify(rxvq->vq);
1433 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1435 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1436 rxvq = dev->data->rx_queues[i];
1437 VIRTQUEUE_DUMP(rxvq->vq);
1440 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1441 txvq = dev->data->tx_queues[i];
1442 VIRTQUEUE_DUMP(txvq->vq);
1448 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1450 struct rte_mbuf *buf;
1451 int i, mbuf_num = 0;
1453 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1454 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1457 "Before freeing rxq[%d] used and unused buf", i);
1458 VIRTQUEUE_DUMP(rxvq->vq);
1460 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1461 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1462 rte_pktmbuf_free(buf);
1466 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1468 "After freeing rxq[%d] used and unused buf", i);
1469 VIRTQUEUE_DUMP(rxvq->vq);
1472 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1473 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1476 "Before freeing txq[%d] used and unused bufs",
1478 VIRTQUEUE_DUMP(txvq->vq);
1481 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1482 rte_pktmbuf_free(buf);
1486 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1488 "After freeing txq[%d] used and unused buf", i);
1489 VIRTQUEUE_DUMP(txvq->vq);
1494 * Stop device: disable interrupt and mark link down
1497 virtio_dev_stop(struct rte_eth_dev *dev)
1499 struct rte_eth_link link;
1500 struct virtio_hw *hw = dev->data->dev_private;
1502 PMD_INIT_LOG(DEBUG, "stop");
1506 if (dev->data->dev_conf.intr_conf.lsc)
1507 rte_intr_disable(&dev->pci_dev->intr_handle);
1509 memset(&link, 0, sizeof(link));
1510 virtio_dev_atomic_write_link_status(dev, &link);
1514 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1516 struct rte_eth_link link, old;
1518 struct virtio_hw *hw = dev->data->dev_private;
1519 memset(&link, 0, sizeof(link));
1520 virtio_dev_atomic_read_link_status(dev, &link);
1522 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1523 link.link_speed = SPEED_10G;
1525 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1526 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1527 vtpci_read_dev_config(hw,
1528 offsetof(struct virtio_net_config, status),
1529 &status, sizeof(status));
1530 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1531 link.link_status = ETH_LINK_DOWN;
1532 PMD_INIT_LOG(DEBUG, "Port %d is down",
1533 dev->data->port_id);
1535 link.link_status = ETH_LINK_UP;
1536 PMD_INIT_LOG(DEBUG, "Port %d is up",
1537 dev->data->port_id);
1540 link.link_status = ETH_LINK_UP;
1542 virtio_dev_atomic_write_link_status(dev, &link);
1544 return (old.link_status == link.link_status) ? -1 : 0;
1548 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1550 struct virtio_hw *hw = dev->data->dev_private;
1553 dev_info->driver_name = dev->driver->pci_drv.driver.name;
1555 dev_info->driver_name = "virtio_user PMD";
1556 dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
1557 dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
1558 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1559 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1560 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1561 dev_info->default_txconf = (struct rte_eth_txconf) {
1562 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1567 * It enables testpmd to collect per queue stats.
1570 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1571 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1572 __rte_unused uint8_t is_rx)
1577 DRIVER_EXPORT_NAME(net_virtio, __COUNTER__);
1578 DRIVER_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);