1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
11 #include <rte_ethdev_driver.h>
12 #include <rte_ethdev_pci.h>
13 #include <rte_memcpy.h>
14 #include <rte_string_fns.h>
15 #include <rte_memzone.h>
16 #include <rte_malloc.h>
17 #include <rte_atomic.h>
18 #include <rte_branch_prediction.h>
20 #include <rte_bus_pci.h>
21 #include <rte_ether.h>
24 #include <rte_common.h>
25 #include <rte_errno.h>
26 #include <rte_cpuflags.h>
28 #include <rte_memory.h>
31 #include <rte_cycles.h>
33 #include "virtio_ethdev.h"
34 #include "virtio_pci.h"
35 #include "virtio_logs.h"
36 #include "virtqueue.h"
37 #include "virtio_rxtx.h"
39 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
40 static int virtio_dev_configure(struct rte_eth_dev *dev);
41 static int virtio_dev_start(struct rte_eth_dev *dev);
42 static void virtio_dev_stop(struct rte_eth_dev *dev);
43 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
44 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
45 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
46 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
47 static void virtio_dev_info_get(struct rte_eth_dev *dev,
48 struct rte_eth_dev_info *dev_info);
49 static int virtio_dev_link_update(struct rte_eth_dev *dev,
50 int wait_to_complete);
51 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
53 static void virtio_set_hwaddr(struct virtio_hw *hw);
54 static void virtio_get_hwaddr(struct virtio_hw *hw);
56 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
57 struct rte_eth_stats *stats);
58 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
59 struct rte_eth_xstat *xstats, unsigned n);
60 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
61 struct rte_eth_xstat_name *xstats_names,
63 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
64 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
65 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
66 uint16_t vlan_id, int on);
67 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
68 struct ether_addr *mac_addr,
69 uint32_t index, uint32_t vmdq);
70 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
71 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
72 struct ether_addr *mac_addr);
74 static int virtio_intr_enable(struct rte_eth_dev *dev);
75 static int virtio_intr_disable(struct rte_eth_dev *dev);
77 static int virtio_dev_queue_stats_mapping_set(
78 struct rte_eth_dev *eth_dev,
83 int virtio_logtype_init;
84 int virtio_logtype_driver;
86 static void virtio_notify_peers(struct rte_eth_dev *dev);
87 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
90 * The set of PCI devices this driver supports
92 static const struct rte_pci_id pci_id_virtio_map[] = {
93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
94 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
95 { .vendor_id = 0, /* sentinel */ },
98 struct rte_virtio_xstats_name_off {
99 char name[RTE_ETH_XSTATS_NAME_SIZE];
103 /* [rt]x_qX_ is prepended to the name string here */
104 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
105 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
106 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
107 {"errors", offsetof(struct virtnet_rx, stats.errors)},
108 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
109 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
110 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
111 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
112 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
113 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
114 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
115 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
116 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
117 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
120 /* [rt]x_qX_ is prepended to the name string here */
121 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
122 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
123 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
124 {"errors", offsetof(struct virtnet_tx, stats.errors)},
125 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
126 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
127 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
128 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
129 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
130 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
131 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
132 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
133 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
134 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
137 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
138 sizeof(rte_virtio_rxq_stat_strings[0]))
139 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
140 sizeof(rte_virtio_txq_stat_strings[0]))
142 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
145 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
146 int *dlen, int pkt_num)
150 virtio_net_ctrl_ack status = ~0;
151 struct virtio_pmd_ctrl *result;
152 struct virtqueue *vq;
154 ctrl->status = status;
156 if (!cvq || !cvq->vq) {
157 PMD_INIT_LOG(ERR, "Control queue is not supported.");
161 rte_spinlock_lock(&cvq->lock);
163 head = vq->vq_desc_head_idx;
165 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
166 "vq->hw->cvq = %p vq = %p",
167 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
169 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
170 rte_spinlock_unlock(&cvq->lock);
174 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
175 sizeof(struct virtio_pmd_ctrl));
178 * Format is enforced in qemu code:
179 * One TX packet for header;
180 * At least one TX packet per argument;
181 * One RX packet for ACK.
183 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
184 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
185 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
187 i = vq->vq_ring.desc[head].next;
189 for (k = 0; k < pkt_num; k++) {
190 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
191 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
192 + sizeof(struct virtio_net_ctrl_hdr)
193 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
194 vq->vq_ring.desc[i].len = dlen[k];
197 i = vq->vq_ring.desc[i].next;
200 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
201 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
202 + sizeof(struct virtio_net_ctrl_hdr);
203 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
206 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
208 vq_update_avail_ring(vq, head);
209 vq_update_avail_idx(vq);
211 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
213 virtqueue_notify(vq);
216 while (VIRTQUEUE_NUSED(vq) == 0) {
221 while (VIRTQUEUE_NUSED(vq)) {
222 uint32_t idx, desc_idx, used_idx;
223 struct vring_used_elem *uep;
225 used_idx = (uint32_t)(vq->vq_used_cons_idx
226 & (vq->vq_nentries - 1));
227 uep = &vq->vq_ring.used->ring[used_idx];
228 idx = (uint32_t) uep->id;
231 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
232 desc_idx = vq->vq_ring.desc[desc_idx].next;
236 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
237 vq->vq_desc_head_idx = idx;
239 vq->vq_used_cons_idx++;
243 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
244 vq->vq_free_cnt, vq->vq_desc_head_idx);
246 result = cvq->virtio_net_hdr_mz->addr;
248 rte_spinlock_unlock(&cvq->lock);
249 return result->status;
253 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
255 struct virtio_hw *hw = dev->data->dev_private;
256 struct virtio_pmd_ctrl ctrl;
260 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
261 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
262 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
264 dlen[0] = sizeof(uint16_t);
266 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
268 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
269 "failed, this is too late now...");
277 virtio_dev_queue_release(void *queue __rte_unused)
283 virtio_get_nr_vq(struct virtio_hw *hw)
285 uint16_t nr_vq = hw->max_queue_pairs * 2;
287 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
294 virtio_init_vring(struct virtqueue *vq)
296 int size = vq->vq_nentries;
297 struct vring *vr = &vq->vq_ring;
298 uint8_t *ring_mem = vq->vq_ring_virt_mem;
300 PMD_INIT_FUNC_TRACE();
303 * Reinitialise since virtio port might have been stopped and restarted
305 memset(ring_mem, 0, vq->vq_ring_size);
306 vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN);
307 vq->vq_used_cons_idx = 0;
308 vq->vq_desc_head_idx = 0;
309 vq->vq_avail_idx = 0;
310 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
311 vq->vq_free_cnt = vq->vq_nentries;
312 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
314 vring_desc_init(vr->desc, size);
317 * Disable device(host) interrupting guest
319 virtqueue_disable_intr(vq);
323 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
325 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
326 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
327 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
328 unsigned int vq_size, size;
329 struct virtio_hw *hw = dev->data->dev_private;
330 struct virtnet_rx *rxvq = NULL;
331 struct virtnet_tx *txvq = NULL;
332 struct virtnet_ctl *cvq = NULL;
333 struct virtqueue *vq;
334 size_t sz_hdr_mz = 0;
335 void *sw_ring = NULL;
336 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
339 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
342 * Read the virtqueue size from the Queue Size field
343 * Always power of 2 and if 0 virtqueue does not exist
345 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
346 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
348 PMD_INIT_LOG(ERR, "virtqueue does not exist");
352 if (!rte_is_power_of_2(vq_size)) {
353 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
357 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
358 dev->data->port_id, vtpci_queue_idx);
360 size = RTE_ALIGN_CEIL(sizeof(*vq) +
361 vq_size * sizeof(struct vq_desc_extra),
362 RTE_CACHE_LINE_SIZE);
363 if (queue_type == VTNET_TQ) {
365 * For each xmit packet, allocate a virtio_net_hdr
366 * and indirect ring elements
368 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
369 } else if (queue_type == VTNET_CQ) {
370 /* Allocate a page for control vq command, data and status */
371 sz_hdr_mz = PAGE_SIZE;
374 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
377 PMD_INIT_LOG(ERR, "can not allocate vq");
380 hw->vqs[vtpci_queue_idx] = vq;
383 vq->vq_queue_index = vtpci_queue_idx;
384 vq->vq_nentries = vq_size;
387 * Reserve a memzone for vring elements
389 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
390 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
391 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
392 size, vq->vq_ring_size);
394 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
396 0, VIRTIO_PCI_VRING_ALIGN);
398 if (rte_errno == EEXIST)
399 mz = rte_memzone_lookup(vq_name);
406 memset(mz->addr, 0, mz->len);
408 vq->vq_ring_mem = mz->iova;
409 vq->vq_ring_virt_mem = mz->addr;
410 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
412 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
413 (uint64_t)(uintptr_t)mz->addr);
415 virtio_init_vring(vq);
418 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
419 dev->data->port_id, vtpci_queue_idx);
420 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
422 RTE_CACHE_LINE_SIZE);
423 if (hdr_mz == NULL) {
424 if (rte_errno == EEXIST)
425 hdr_mz = rte_memzone_lookup(vq_hdr_name);
426 if (hdr_mz == NULL) {
433 if (queue_type == VTNET_RQ) {
434 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
435 sizeof(vq->sw_ring[0]);
437 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
438 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
440 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
445 vq->sw_ring = sw_ring;
448 rxvq->port_id = dev->data->port_id;
450 } else if (queue_type == VTNET_TQ) {
453 txvq->port_id = dev->data->port_id;
455 txvq->virtio_net_hdr_mz = hdr_mz;
456 txvq->virtio_net_hdr_mem = hdr_mz->iova;
457 } else if (queue_type == VTNET_CQ) {
461 cvq->virtio_net_hdr_mz = hdr_mz;
462 cvq->virtio_net_hdr_mem = hdr_mz->iova;
463 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
468 /* For virtio_user case (that is when hw->dev is NULL), we use
469 * virtual address. And we need properly set _offset_, please see
470 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
472 if (!hw->virtio_user_dev)
473 vq->offset = offsetof(struct rte_mbuf, buf_iova);
475 vq->vq_ring_mem = (uintptr_t)mz->addr;
476 vq->offset = offsetof(struct rte_mbuf, buf_addr);
477 if (queue_type == VTNET_TQ)
478 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
479 else if (queue_type == VTNET_CQ)
480 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
483 if (queue_type == VTNET_TQ) {
484 struct virtio_tx_region *txr;
488 memset(txr, 0, vq_size * sizeof(*txr));
489 for (i = 0; i < vq_size; i++) {
490 struct vring_desc *start_dp = txr[i].tx_indir;
492 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
494 /* first indirect descriptor is always the tx header */
495 start_dp->addr = txvq->virtio_net_hdr_mem
497 + offsetof(struct virtio_tx_region, tx_hdr);
499 start_dp->len = hw->vtnet_hdr_size;
500 start_dp->flags = VRING_DESC_F_NEXT;
504 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
505 PMD_INIT_LOG(ERR, "setup_queue failed");
513 rte_memzone_free(hdr_mz);
514 rte_memzone_free(mz);
521 virtio_free_queues(struct virtio_hw *hw)
523 uint16_t nr_vq = virtio_get_nr_vq(hw);
524 struct virtqueue *vq;
531 for (i = 0; i < nr_vq; i++) {
536 queue_type = virtio_get_queue_type(hw, i);
537 if (queue_type == VTNET_RQ) {
538 rte_free(vq->sw_ring);
539 rte_memzone_free(vq->rxq.mz);
540 } else if (queue_type == VTNET_TQ) {
541 rte_memzone_free(vq->txq.mz);
542 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
544 rte_memzone_free(vq->cq.mz);
545 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
557 virtio_alloc_queues(struct rte_eth_dev *dev)
559 struct virtio_hw *hw = dev->data->dev_private;
560 uint16_t nr_vq = virtio_get_nr_vq(hw);
564 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
566 PMD_INIT_LOG(ERR, "failed to allocate vqs");
570 for (i = 0; i < nr_vq; i++) {
571 ret = virtio_init_queue(dev, i);
573 virtio_free_queues(hw);
581 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
584 virtio_dev_close(struct rte_eth_dev *dev)
586 struct virtio_hw *hw = dev->data->dev_private;
587 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
589 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
592 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
593 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
595 virtio_queues_unbind_intr(dev);
597 if (intr_conf->lsc || intr_conf->rxq) {
598 virtio_intr_disable(dev);
599 rte_intr_efd_disable(dev->intr_handle);
600 rte_free(dev->intr_handle->intr_vec);
601 dev->intr_handle->intr_vec = NULL;
605 virtio_dev_free_mbufs(dev);
606 virtio_free_queues(hw);
610 virtio_dev_promiscuous_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");
622 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
623 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
627 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
629 PMD_INIT_LOG(ERR, "Failed to enable promisc");
633 virtio_dev_promiscuous_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");
645 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
646 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
650 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
652 PMD_INIT_LOG(ERR, "Failed to disable promisc");
656 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
658 struct virtio_hw *hw = dev->data->dev_private;
659 struct virtio_pmd_ctrl ctrl;
663 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
664 PMD_INIT_LOG(INFO, "host does not support rx control");
668 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
669 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
673 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
675 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
679 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
681 struct virtio_hw *hw = dev->data->dev_private;
682 struct virtio_pmd_ctrl ctrl;
686 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
687 PMD_INIT_LOG(INFO, "host does not support rx control");
691 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
692 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
696 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
698 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
701 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
703 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
705 struct virtio_hw *hw = dev->data->dev_private;
706 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
708 uint32_t frame_size = mtu + ether_hdr_len;
709 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
711 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
713 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
714 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
715 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
722 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
724 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
725 struct virtqueue *vq = rxvq->vq;
727 virtqueue_enable_intr(vq);
732 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
734 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
735 struct virtqueue *vq = rxvq->vq;
737 virtqueue_disable_intr(vq);
742 * dev_ops for virtio, bare necessities for basic operation
744 static const struct eth_dev_ops virtio_eth_dev_ops = {
745 .dev_configure = virtio_dev_configure,
746 .dev_start = virtio_dev_start,
747 .dev_stop = virtio_dev_stop,
748 .dev_close = virtio_dev_close,
749 .promiscuous_enable = virtio_dev_promiscuous_enable,
750 .promiscuous_disable = virtio_dev_promiscuous_disable,
751 .allmulticast_enable = virtio_dev_allmulticast_enable,
752 .allmulticast_disable = virtio_dev_allmulticast_disable,
753 .mtu_set = virtio_mtu_set,
754 .dev_infos_get = virtio_dev_info_get,
755 .stats_get = virtio_dev_stats_get,
756 .xstats_get = virtio_dev_xstats_get,
757 .xstats_get_names = virtio_dev_xstats_get_names,
758 .stats_reset = virtio_dev_stats_reset,
759 .xstats_reset = virtio_dev_stats_reset,
760 .link_update = virtio_dev_link_update,
761 .vlan_offload_set = virtio_dev_vlan_offload_set,
762 .rx_queue_setup = virtio_dev_rx_queue_setup,
763 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
764 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
765 .rx_queue_release = virtio_dev_queue_release,
766 .rx_descriptor_done = virtio_dev_rx_queue_done,
767 .tx_queue_setup = virtio_dev_tx_queue_setup,
768 .tx_queue_release = virtio_dev_queue_release,
769 /* collect stats per queue */
770 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
771 .vlan_filter_set = virtio_vlan_filter_set,
772 .mac_addr_add = virtio_mac_addr_add,
773 .mac_addr_remove = virtio_mac_addr_remove,
774 .mac_addr_set = virtio_mac_addr_set,
778 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
779 struct rte_eth_link *link)
781 struct rte_eth_link *dst = link;
782 struct rte_eth_link *src = &(dev->data->dev_link);
784 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
785 *(uint64_t *)src) == 0)
792 * Atomically writes the link status information into global
793 * structure rte_eth_dev.
796 * - Pointer to the structure rte_eth_dev to read from.
797 * - Pointer to the buffer to be saved with the link status.
800 * - On success, zero.
801 * - On failure, negative value.
804 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
805 struct rte_eth_link *link)
807 struct rte_eth_link *dst = &(dev->data->dev_link);
808 struct rte_eth_link *src = link;
810 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
811 *(uint64_t *)src) == 0)
818 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
822 for (i = 0; i < dev->data->nb_tx_queues; i++) {
823 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
827 stats->opackets += txvq->stats.packets;
828 stats->obytes += txvq->stats.bytes;
829 stats->oerrors += txvq->stats.errors;
831 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
832 stats->q_opackets[i] = txvq->stats.packets;
833 stats->q_obytes[i] = txvq->stats.bytes;
837 for (i = 0; i < dev->data->nb_rx_queues; i++) {
838 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
842 stats->ipackets += rxvq->stats.packets;
843 stats->ibytes += rxvq->stats.bytes;
844 stats->ierrors += rxvq->stats.errors;
846 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
847 stats->q_ipackets[i] = rxvq->stats.packets;
848 stats->q_ibytes[i] = rxvq->stats.bytes;
852 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
855 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
856 struct rte_eth_xstat_name *xstats_names,
857 __rte_unused unsigned limit)
863 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
864 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
866 if (xstats_names != NULL) {
867 /* Note: limit checked in rte_eth_xstats_names() */
869 for (i = 0; i < dev->data->nb_rx_queues; i++) {
870 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
873 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
874 snprintf(xstats_names[count].name,
875 sizeof(xstats_names[count].name),
877 rte_virtio_rxq_stat_strings[t].name);
882 for (i = 0; i < dev->data->nb_tx_queues; i++) {
883 struct virtnet_tx *txvq = dev->data->tx_queues[i];
886 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
887 snprintf(xstats_names[count].name,
888 sizeof(xstats_names[count].name),
890 rte_virtio_txq_stat_strings[t].name);
900 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
906 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
907 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
912 for (i = 0; i < dev->data->nb_rx_queues; i++) {
913 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
920 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
921 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
922 rte_virtio_rxq_stat_strings[t].offset);
923 xstats[count].id = count;
928 for (i = 0; i < dev->data->nb_tx_queues; i++) {
929 struct virtnet_tx *txvq = dev->data->tx_queues[i];
936 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
937 xstats[count].value = *(uint64_t *)(((char *)txvq) +
938 rte_virtio_txq_stat_strings[t].offset);
939 xstats[count].id = count;
948 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
950 virtio_update_stats(dev, stats);
956 virtio_dev_stats_reset(struct rte_eth_dev *dev)
960 for (i = 0; i < dev->data->nb_tx_queues; i++) {
961 struct virtnet_tx *txvq = dev->data->tx_queues[i];
965 txvq->stats.packets = 0;
966 txvq->stats.bytes = 0;
967 txvq->stats.errors = 0;
968 txvq->stats.multicast = 0;
969 txvq->stats.broadcast = 0;
970 memset(txvq->stats.size_bins, 0,
971 sizeof(txvq->stats.size_bins[0]) * 8);
974 for (i = 0; i < dev->data->nb_rx_queues; i++) {
975 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
979 rxvq->stats.packets = 0;
980 rxvq->stats.bytes = 0;
981 rxvq->stats.errors = 0;
982 rxvq->stats.multicast = 0;
983 rxvq->stats.broadcast = 0;
984 memset(rxvq->stats.size_bins, 0,
985 sizeof(rxvq->stats.size_bins[0]) * 8);
990 virtio_set_hwaddr(struct virtio_hw *hw)
992 vtpci_write_dev_config(hw,
993 offsetof(struct virtio_net_config, mac),
994 &hw->mac_addr, ETHER_ADDR_LEN);
998 virtio_get_hwaddr(struct virtio_hw *hw)
1000 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1001 vtpci_read_dev_config(hw,
1002 offsetof(struct virtio_net_config, mac),
1003 &hw->mac_addr, ETHER_ADDR_LEN);
1005 eth_random_addr(&hw->mac_addr[0]);
1006 virtio_set_hwaddr(hw);
1011 virtio_mac_table_set(struct virtio_hw *hw,
1012 const struct virtio_net_ctrl_mac *uc,
1013 const struct virtio_net_ctrl_mac *mc)
1015 struct virtio_pmd_ctrl ctrl;
1018 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1019 PMD_DRV_LOG(INFO, "host does not support mac table");
1023 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1024 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1026 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1027 memcpy(ctrl.data, uc, len[0]);
1029 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1030 memcpy(ctrl.data + len[0], mc, len[1]);
1032 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1034 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1039 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1040 uint32_t index, uint32_t vmdq __rte_unused)
1042 struct virtio_hw *hw = dev->data->dev_private;
1043 const struct ether_addr *addrs = dev->data->mac_addrs;
1045 struct virtio_net_ctrl_mac *uc, *mc;
1047 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1048 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1052 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1054 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1057 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1058 const struct ether_addr *addr
1059 = (i == index) ? mac_addr : addrs + i;
1060 struct virtio_net_ctrl_mac *tbl
1061 = is_multicast_ether_addr(addr) ? mc : uc;
1063 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1066 return virtio_mac_table_set(hw, uc, mc);
1070 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1072 struct virtio_hw *hw = dev->data->dev_private;
1073 struct ether_addr *addrs = dev->data->mac_addrs;
1074 struct virtio_net_ctrl_mac *uc, *mc;
1077 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1078 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1082 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1084 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1087 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1088 struct virtio_net_ctrl_mac *tbl;
1090 if (i == index || is_zero_ether_addr(addrs + i))
1093 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1094 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1097 virtio_mac_table_set(hw, uc, mc);
1101 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1103 struct virtio_hw *hw = dev->data->dev_private;
1105 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1107 /* Use atomic update if available */
1108 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1109 struct virtio_pmd_ctrl ctrl;
1110 int len = ETHER_ADDR_LEN;
1112 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1113 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1115 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1116 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1117 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1118 virtio_set_hwaddr(hw);
1122 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1124 struct virtio_hw *hw = dev->data->dev_private;
1125 struct virtio_pmd_ctrl ctrl;
1128 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1131 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1132 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1133 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1134 len = sizeof(vlan_id);
1136 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1140 virtio_intr_enable(struct rte_eth_dev *dev)
1142 struct virtio_hw *hw = dev->data->dev_private;
1144 if (rte_intr_enable(dev->intr_handle) < 0)
1147 if (!hw->virtio_user_dev)
1148 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1154 virtio_intr_disable(struct rte_eth_dev *dev)
1156 struct virtio_hw *hw = dev->data->dev_private;
1158 if (rte_intr_disable(dev->intr_handle) < 0)
1161 if (!hw->virtio_user_dev)
1162 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1168 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1170 uint64_t host_features;
1172 /* Prepare guest_features: feature that driver wants to support */
1173 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1176 /* Read device(host) feature bits */
1177 host_features = VTPCI_OPS(hw)->get_features(hw);
1178 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1181 /* If supported, ensure MTU value is valid before acknowledging it. */
1182 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1183 struct virtio_net_config config;
1185 vtpci_read_dev_config(hw,
1186 offsetof(struct virtio_net_config, mtu),
1187 &config.mtu, sizeof(config.mtu));
1189 if (config.mtu < ETHER_MIN_MTU)
1190 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1194 * Negotiate features: Subset of device feature bits are written back
1195 * guest feature bits.
1197 hw->guest_features = req_features;
1198 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1199 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1200 hw->guest_features);
1203 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1205 "VIRTIO_F_VERSION_1 features is not enabled.");
1208 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1209 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1211 "failed to set FEATURES_OK status!");
1216 hw->req_guest_features = req_features;
1222 virtio_dev_pause(struct rte_eth_dev *dev)
1224 struct virtio_hw *hw = dev->data->dev_private;
1226 rte_spinlock_lock(&hw->state_lock);
1228 if (hw->started == 0) {
1229 /* Device is just stopped. */
1230 rte_spinlock_unlock(&hw->state_lock);
1235 * Prevent the worker threads from touching queues to avoid contention,
1236 * 1 ms should be enough for the ongoing Tx function to finish.
1243 * Recover hw state to let the worker threads continue.
1246 virtio_dev_resume(struct rte_eth_dev *dev)
1248 struct virtio_hw *hw = dev->data->dev_private;
1251 rte_spinlock_unlock(&hw->state_lock);
1255 * Should be called only after device is paused.
1258 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1261 struct virtio_hw *hw = dev->data->dev_private;
1262 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1265 hw->inject_pkts = tx_pkts;
1266 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1267 hw->inject_pkts = NULL;
1273 virtio_notify_peers(struct rte_eth_dev *dev)
1275 struct virtio_hw *hw = dev->data->dev_private;
1276 struct virtnet_rx *rxvq = dev->data->rx_queues[0];
1277 struct rte_mbuf *rarp_mbuf;
1279 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1280 (struct ether_addr *)hw->mac_addr);
1281 if (rarp_mbuf == NULL) {
1282 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1286 /* If virtio port just stopped, no need to send RARP */
1287 if (virtio_dev_pause(dev) < 0) {
1288 rte_pktmbuf_free(rarp_mbuf);
1292 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1293 virtio_dev_resume(dev);
1297 virtio_ack_link_announce(struct rte_eth_dev *dev)
1299 struct virtio_hw *hw = dev->data->dev_private;
1300 struct virtio_pmd_ctrl ctrl;
1302 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1303 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1305 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1309 * Process virtio config changed interrupt. Call the callback
1310 * if link state changed, generate gratuitous RARP packet if
1311 * the status indicates an ANNOUNCE.
1314 virtio_interrupt_handler(void *param)
1316 struct rte_eth_dev *dev = param;
1317 struct virtio_hw *hw = dev->data->dev_private;
1320 /* Read interrupt status which clears interrupt */
1321 isr = vtpci_isr(hw);
1322 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1324 if (virtio_intr_enable(dev) < 0)
1325 PMD_DRV_LOG(ERR, "interrupt enable failed");
1327 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1328 if (virtio_dev_link_update(dev, 0) == 0)
1329 _rte_eth_dev_callback_process(dev,
1330 RTE_ETH_EVENT_INTR_LSC,
1334 if (isr & VIRTIO_NET_S_ANNOUNCE) {
1335 virtio_notify_peers(dev);
1336 virtio_ack_link_announce(dev);
1340 /* set rx and tx handlers according to what is supported */
1342 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1344 struct virtio_hw *hw = eth_dev->data->dev_private;
1346 if (hw->use_simple_rx) {
1347 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1348 eth_dev->data->port_id);
1349 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1350 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1352 "virtio: using mergeable buffer Rx path on port %u",
1353 eth_dev->data->port_id);
1354 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1356 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1357 eth_dev->data->port_id);
1358 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1361 if (hw->use_simple_tx) {
1362 PMD_INIT_LOG(INFO, "virtio: using simple Tx path on port %u",
1363 eth_dev->data->port_id);
1364 eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple;
1366 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1367 eth_dev->data->port_id);
1368 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1372 /* Only support 1:1 queue/interrupt mapping so far.
1373 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1374 * interrupt vectors (<N+1).
1377 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1380 struct virtio_hw *hw = dev->data->dev_private;
1382 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1383 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1384 dev->intr_handle->intr_vec[i] = i + 1;
1385 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1386 VIRTIO_MSI_NO_VECTOR) {
1387 PMD_DRV_LOG(ERR, "failed to set queue vector");
1396 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1399 struct virtio_hw *hw = dev->data->dev_private;
1401 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1402 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1403 VTPCI_OPS(hw)->set_queue_irq(hw,
1404 hw->vqs[i * VTNET_CQ],
1405 VIRTIO_MSI_NO_VECTOR);
1409 virtio_configure_intr(struct rte_eth_dev *dev)
1411 struct virtio_hw *hw = dev->data->dev_private;
1413 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1414 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1418 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1419 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1423 if (!dev->intr_handle->intr_vec) {
1424 dev->intr_handle->intr_vec =
1425 rte_zmalloc("intr_vec",
1426 hw->max_queue_pairs * sizeof(int), 0);
1427 if (!dev->intr_handle->intr_vec) {
1428 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1429 hw->max_queue_pairs);
1434 /* Re-register callback to update max_intr */
1435 rte_intr_callback_unregister(dev->intr_handle,
1436 virtio_interrupt_handler,
1438 rte_intr_callback_register(dev->intr_handle,
1439 virtio_interrupt_handler,
1442 /* DO NOT try to remove this! This function will enable msix, or QEMU
1443 * will encounter SIGSEGV when DRIVER_OK is sent.
1444 * And for legacy devices, this should be done before queue/vec binding
1445 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1446 * (22) will be ignored.
1448 if (virtio_intr_enable(dev) < 0) {
1449 PMD_DRV_LOG(ERR, "interrupt enable failed");
1453 if (virtio_queues_bind_intr(dev) < 0) {
1454 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1461 /* reset device and renegotiate features if needed */
1463 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1465 struct virtio_hw *hw = eth_dev->data->dev_private;
1466 struct virtio_net_config *config;
1467 struct virtio_net_config local_config;
1468 struct rte_pci_device *pci_dev = NULL;
1471 /* Reset the device although not necessary at startup */
1475 virtio_dev_free_mbufs(eth_dev);
1476 virtio_free_queues(hw);
1479 /* Tell the host we've noticed this device. */
1480 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1482 /* Tell the host we've known how to drive the device. */
1483 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1484 if (virtio_negotiate_features(hw, req_features) < 0)
1487 if (!hw->virtio_user_dev) {
1488 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1489 rte_eth_copy_pci_info(eth_dev, pci_dev);
1492 /* If host does not support both status and MSI-X then disable LSC */
1493 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1494 hw->use_msix != VIRTIO_MSIX_NONE)
1495 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1497 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1499 /* Setting up rx_header size for the device */
1500 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1501 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1502 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1504 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1506 /* Copy the permanent MAC address to: virtio_hw */
1507 virtio_get_hwaddr(hw);
1508 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1509 ð_dev->data->mac_addrs[0]);
1511 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1512 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1513 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1515 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1516 config = &local_config;
1518 vtpci_read_dev_config(hw,
1519 offsetof(struct virtio_net_config, mac),
1520 &config->mac, sizeof(config->mac));
1522 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1523 vtpci_read_dev_config(hw,
1524 offsetof(struct virtio_net_config, status),
1525 &config->status, sizeof(config->status));
1528 "VIRTIO_NET_F_STATUS is not supported");
1532 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1533 vtpci_read_dev_config(hw,
1534 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1535 &config->max_virtqueue_pairs,
1536 sizeof(config->max_virtqueue_pairs));
1539 "VIRTIO_NET_F_MQ is not supported");
1540 config->max_virtqueue_pairs = 1;
1543 hw->max_queue_pairs = config->max_virtqueue_pairs;
1545 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1546 vtpci_read_dev_config(hw,
1547 offsetof(struct virtio_net_config, mtu),
1549 sizeof(config->mtu));
1552 * MTU value has already been checked at negotiation
1553 * time, but check again in case it has changed since
1554 * then, which should not happen.
1556 if (config->mtu < ETHER_MIN_MTU) {
1557 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1562 hw->max_mtu = config->mtu;
1563 /* Set initial MTU to maximum one supported by vhost */
1564 eth_dev->data->mtu = config->mtu;
1567 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1568 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1571 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1572 config->max_virtqueue_pairs);
1573 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1575 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1576 config->mac[0], config->mac[1],
1577 config->mac[2], config->mac[3],
1578 config->mac[4], config->mac[5]);
1580 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1581 hw->max_queue_pairs = 1;
1582 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1583 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1586 ret = virtio_alloc_queues(eth_dev);
1590 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1591 if (virtio_configure_intr(eth_dev) < 0) {
1592 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1597 vtpci_reinit_complete(hw);
1600 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1601 eth_dev->data->port_id, pci_dev->id.vendor_id,
1602 pci_dev->id.device_id);
1608 * Remap the PCI device again (IO port map for legacy device and
1609 * memory map for modern device), so that the secondary process
1610 * could have the PCI initiated correctly.
1613 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1617 * We don't have to re-parse the PCI config space, since
1618 * rte_pci_map_device() makes sure the mapped address
1619 * in secondary process would equal to the one mapped in
1620 * the primary process: error will be returned if that
1621 * requirement is not met.
1623 * That said, we could simply reuse all cap pointers
1624 * (such as dev_cfg, common_cfg, etc.) parsed from the
1625 * primary process, which is stored in shared memory.
1627 if (rte_pci_map_device(pci_dev)) {
1628 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1632 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1640 virtio_set_vtpci_ops(struct virtio_hw *hw)
1642 #ifdef RTE_VIRTIO_USER
1643 if (hw->virtio_user_dev)
1644 VTPCI_OPS(hw) = &virtio_user_ops;
1648 VTPCI_OPS(hw) = &modern_ops;
1650 VTPCI_OPS(hw) = &legacy_ops;
1654 * This function is based on probe() function in virtio_pci.c
1655 * It returns 0 on success.
1658 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1660 struct virtio_hw *hw = eth_dev->data->dev_private;
1663 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1665 eth_dev->dev_ops = &virtio_eth_dev_ops;
1667 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1668 if (!hw->virtio_user_dev) {
1669 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1674 virtio_set_vtpci_ops(hw);
1675 set_rxtx_funcs(eth_dev);
1680 /* Allocate memory for storing MAC addresses */
1681 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1682 if (eth_dev->data->mac_addrs == NULL) {
1684 "Failed to allocate %d bytes needed to store MAC addresses",
1685 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1689 hw->port_id = eth_dev->data->port_id;
1690 /* For virtio_user case the hw->virtio_user_dev is populated by
1691 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1693 if (!hw->virtio_user_dev) {
1694 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1699 /* reset device and negotiate default features */
1700 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1704 /* Setup interrupt callback */
1705 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1706 rte_intr_callback_register(eth_dev->intr_handle,
1707 virtio_interrupt_handler, eth_dev);
1712 rte_free(eth_dev->data->mac_addrs);
1717 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1719 PMD_INIT_FUNC_TRACE();
1721 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1724 virtio_dev_stop(eth_dev);
1725 virtio_dev_close(eth_dev);
1727 eth_dev->dev_ops = NULL;
1728 eth_dev->tx_pkt_burst = NULL;
1729 eth_dev->rx_pkt_burst = NULL;
1731 rte_free(eth_dev->data->mac_addrs);
1732 eth_dev->data->mac_addrs = NULL;
1734 /* reset interrupt callback */
1735 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1736 rte_intr_callback_unregister(eth_dev->intr_handle,
1737 virtio_interrupt_handler,
1739 if (eth_dev->device)
1740 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1742 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1747 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1748 struct rte_pci_device *pci_dev)
1750 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1751 eth_virtio_dev_init);
1754 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1756 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1759 static struct rte_pci_driver rte_virtio_pmd = {
1761 .name = "net_virtio",
1763 .id_table = pci_id_virtio_map,
1765 .probe = eth_virtio_pci_probe,
1766 .remove = eth_virtio_pci_remove,
1769 RTE_INIT(rte_virtio_pmd_init);
1771 rte_virtio_pmd_init(void)
1773 if (rte_eal_iopl_init() != 0) {
1774 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1778 rte_pci_register(&rte_virtio_pmd);
1782 * Configure virtio device
1783 * It returns 0 on success.
1786 virtio_dev_configure(struct rte_eth_dev *dev)
1788 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1789 struct virtio_hw *hw = dev->data->dev_private;
1790 uint64_t req_features;
1793 PMD_INIT_LOG(DEBUG, "configure");
1794 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1796 if (dev->data->dev_conf.intr_conf.rxq) {
1797 ret = virtio_init_device(dev, hw->req_guest_features);
1802 /* The name hw_ip_checksum is a bit confusing since it can be
1803 * set by the application to request L3 and/or L4 checksums. In
1804 * case of virtio, only L4 checksum is supported.
1806 if (rxmode->hw_ip_checksum)
1807 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1809 if (rxmode->enable_lro)
1811 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1812 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1814 /* if request features changed, reinit the device */
1815 if (req_features != hw->req_guest_features) {
1816 ret = virtio_init_device(dev, req_features);
1821 if (rxmode->hw_ip_checksum &&
1822 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1824 "rx checksum not available on this host");
1828 if (rxmode->enable_lro &&
1829 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1830 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
1832 "Large Receive Offload not available on this host");
1836 /* start control queue */
1837 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1838 virtio_dev_cq_start(dev);
1840 hw->vlan_strip = rxmode->hw_vlan_strip;
1842 if (rxmode->hw_vlan_filter
1843 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1845 "vlan filtering not available on this host");
1849 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1850 /* Enable vector (0) for Link State Intrerrupt */
1851 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
1852 VIRTIO_MSI_NO_VECTOR) {
1853 PMD_DRV_LOG(ERR, "failed to set config vector");
1857 rte_spinlock_init(&hw->state_lock);
1859 hw->use_simple_rx = 1;
1860 hw->use_simple_tx = 1;
1862 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
1863 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
1864 hw->use_simple_rx = 0;
1865 hw->use_simple_tx = 0;
1868 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1869 hw->use_simple_rx = 0;
1870 hw->use_simple_tx = 0;
1873 if (rxmode->hw_ip_checksum)
1874 hw->use_simple_rx = 0;
1881 virtio_dev_start(struct rte_eth_dev *dev)
1883 uint16_t nb_queues, i;
1884 struct virtnet_rx *rxvq;
1885 struct virtnet_tx *txvq __rte_unused;
1886 struct virtio_hw *hw = dev->data->dev_private;
1889 /* Finish the initialization of the queues */
1890 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1891 ret = virtio_dev_rx_queue_setup_finish(dev, i);
1895 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1896 ret = virtio_dev_tx_queue_setup_finish(dev, i);
1901 /* check if lsc interrupt feature is enabled */
1902 if (dev->data->dev_conf.intr_conf.lsc) {
1903 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1904 PMD_DRV_LOG(ERR, "link status not supported by host");
1909 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
1910 * in device configure, but it could be unmapped when device is
1913 if (dev->data->dev_conf.intr_conf.lsc ||
1914 dev->data->dev_conf.intr_conf.rxq) {
1915 virtio_intr_disable(dev);
1917 if (virtio_intr_enable(dev) < 0) {
1918 PMD_DRV_LOG(ERR, "interrupt enable failed");
1923 /*Notify the backend
1924 *Otherwise the tap backend might already stop its queue due to fullness.
1925 *vhost backend will have no chance to be waked up
1927 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
1928 if (hw->max_queue_pairs > 1) {
1929 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1933 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1935 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1936 rxvq = dev->data->rx_queues[i];
1937 /* Flush the old packets */
1938 virtqueue_rxvq_flush(rxvq->vq);
1939 virtqueue_notify(rxvq->vq);
1942 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1943 txvq = dev->data->tx_queues[i];
1944 virtqueue_notify(txvq->vq);
1947 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1949 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1950 rxvq = dev->data->rx_queues[i];
1951 VIRTQUEUE_DUMP(rxvq->vq);
1954 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1955 txvq = dev->data->tx_queues[i];
1956 VIRTQUEUE_DUMP(txvq->vq);
1959 set_rxtx_funcs(dev);
1962 /* Initialize Link state */
1963 virtio_dev_link_update(dev, 0);
1968 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1970 struct virtio_hw *hw = dev->data->dev_private;
1971 uint16_t nr_vq = virtio_get_nr_vq(hw);
1972 const char *type __rte_unused;
1973 unsigned int i, mbuf_num = 0;
1974 struct virtqueue *vq;
1975 struct rte_mbuf *buf;
1978 if (hw->vqs == NULL)
1981 for (i = 0; i < nr_vq; i++) {
1986 queue_type = virtio_get_queue_type(hw, i);
1987 if (queue_type == VTNET_RQ)
1989 else if (queue_type == VTNET_TQ)
1995 "Before freeing %s[%d] used and unused buf",
1999 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2000 rte_pktmbuf_free(buf);
2005 "After freeing %s[%d] used and unused buf",
2010 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2014 * Stop device: disable interrupt and mark link down
2017 virtio_dev_stop(struct rte_eth_dev *dev)
2019 struct virtio_hw *hw = dev->data->dev_private;
2020 struct rte_eth_link link;
2021 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2023 PMD_INIT_LOG(DEBUG, "stop");
2025 rte_spinlock_lock(&hw->state_lock);
2026 if (intr_conf->lsc || intr_conf->rxq)
2027 virtio_intr_disable(dev);
2030 memset(&link, 0, sizeof(link));
2031 virtio_dev_atomic_write_link_status(dev, &link);
2032 rte_spinlock_unlock(&hw->state_lock);
2036 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2038 struct rte_eth_link link, old;
2040 struct virtio_hw *hw = dev->data->dev_private;
2041 memset(&link, 0, sizeof(link));
2042 virtio_dev_atomic_read_link_status(dev, &link);
2044 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2045 link.link_speed = ETH_SPEED_NUM_10G;
2047 if (hw->started == 0) {
2048 link.link_status = ETH_LINK_DOWN;
2049 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2050 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2051 vtpci_read_dev_config(hw,
2052 offsetof(struct virtio_net_config, status),
2053 &status, sizeof(status));
2054 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2055 link.link_status = ETH_LINK_DOWN;
2056 PMD_INIT_LOG(DEBUG, "Port %d is down",
2057 dev->data->port_id);
2059 link.link_status = ETH_LINK_UP;
2060 PMD_INIT_LOG(DEBUG, "Port %d is up",
2061 dev->data->port_id);
2064 link.link_status = ETH_LINK_UP;
2066 virtio_dev_atomic_write_link_status(dev, &link);
2068 return (old.link_status == link.link_status) ? -1 : 0;
2072 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2074 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2075 struct virtio_hw *hw = dev->data->dev_private;
2077 if (mask & ETH_VLAN_FILTER_MASK) {
2078 if (rxmode->hw_vlan_filter &&
2079 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2082 "vlan filtering not available on this host");
2088 if (mask & ETH_VLAN_STRIP_MASK)
2089 hw->vlan_strip = rxmode->hw_vlan_strip;
2095 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2097 uint64_t tso_mask, host_features;
2098 struct virtio_hw *hw = dev->data->dev_private;
2100 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2102 dev_info->pci_dev = dev->device ? RTE_ETH_DEV_TO_PCI(dev) : NULL;
2103 dev_info->max_rx_queues =
2104 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2105 dev_info->max_tx_queues =
2106 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2107 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2108 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2109 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2110 dev_info->default_txconf = (struct rte_eth_txconf) {
2111 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
2114 host_features = VTPCI_OPS(hw)->get_features(hw);
2115 dev_info->rx_offload_capa = 0;
2116 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2117 dev_info->rx_offload_capa |=
2118 DEV_RX_OFFLOAD_TCP_CKSUM |
2119 DEV_RX_OFFLOAD_UDP_CKSUM;
2121 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2122 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2123 if ((host_features & tso_mask) == tso_mask)
2124 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2126 dev_info->tx_offload_capa = 0;
2127 if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2128 dev_info->tx_offload_capa |=
2129 DEV_TX_OFFLOAD_UDP_CKSUM |
2130 DEV_TX_OFFLOAD_TCP_CKSUM;
2132 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2133 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2134 if ((hw->guest_features & tso_mask) == tso_mask)
2135 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2139 * It enables testpmd to collect per queue stats.
2142 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2143 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2144 __rte_unused uint8_t is_rx)
2149 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2150 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2151 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2153 RTE_INIT(virtio_init_log);
2155 virtio_init_log(void)
2157 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2158 if (virtio_logtype_init >= 0)
2159 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2160 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2161 if (virtio_logtype_driver >= 0)
2162 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);