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_branch_prediction.h>
19 #include <rte_bus_pci.h>
20 #include <rte_ether.h>
23 #include <rte_common.h>
24 #include <rte_errno.h>
25 #include <rte_cpuflags.h>
27 #include <rte_memory.h>
30 #include <rte_cycles.h>
31 #include <rte_kvargs.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"
38 #include "virtio_user/virtio_user_dev.h"
40 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
41 static int virtio_dev_configure(struct rte_eth_dev *dev);
42 static int virtio_dev_start(struct rte_eth_dev *dev);
43 static void virtio_dev_stop(struct rte_eth_dev *dev);
44 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
45 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
46 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
47 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
48 static uint32_t virtio_dev_speed_capa_get(uint32_t speed);
49 static int virtio_dev_devargs_parse(struct rte_devargs *devargs,
53 static int virtio_dev_info_get(struct rte_eth_dev *dev,
54 struct rte_eth_dev_info *dev_info);
55 static int virtio_dev_link_update(struct rte_eth_dev *dev,
56 int wait_to_complete);
57 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
59 static void virtio_set_hwaddr(struct virtio_hw *hw);
60 static void virtio_get_hwaddr(struct virtio_hw *hw);
62 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
63 struct rte_eth_stats *stats);
64 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
65 struct rte_eth_xstat *xstats, unsigned n);
66 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
67 struct rte_eth_xstat_name *xstats_names,
69 static int virtio_dev_stats_reset(struct rte_eth_dev *dev);
70 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
71 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
72 uint16_t vlan_id, int on);
73 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
74 struct rte_ether_addr *mac_addr,
75 uint32_t index, uint32_t vmdq);
76 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
77 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
78 struct rte_ether_addr *mac_addr);
80 static int virtio_intr_disable(struct rte_eth_dev *dev);
82 static int virtio_dev_queue_stats_mapping_set(
83 struct rte_eth_dev *eth_dev,
88 static void virtio_notify_peers(struct rte_eth_dev *dev);
89 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
92 * The set of PCI devices this driver supports
94 static const struct rte_pci_id pci_id_virtio_map[] = {
95 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
96 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
97 { .vendor_id = 0, /* sentinel */ },
100 struct rte_virtio_xstats_name_off {
101 char name[RTE_ETH_XSTATS_NAME_SIZE];
105 /* [rt]x_qX_ is prepended to the name string here */
106 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
107 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
108 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
109 {"errors", offsetof(struct virtnet_rx, stats.errors)},
110 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
111 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
112 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
113 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
114 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
115 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
116 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
117 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
118 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
119 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
122 /* [rt]x_qX_ is prepended to the name string here */
123 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
124 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
125 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
126 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
127 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
128 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
129 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
130 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
131 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
132 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
133 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
134 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
135 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
138 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
139 sizeof(rte_virtio_rxq_stat_strings[0]))
140 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
141 sizeof(rte_virtio_txq_stat_strings[0]))
143 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
145 static struct virtio_pmd_ctrl *
146 virtio_send_command_packed(struct virtnet_ctl *cvq,
147 struct virtio_pmd_ctrl *ctrl,
148 int *dlen, int pkt_num)
150 struct virtqueue *vq = cvq->vq;
152 struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
153 struct virtio_pmd_ctrl *result;
160 * Format is enforced in qemu code:
161 * One TX packet for header;
162 * At least one TX packet per argument;
163 * One RX packet for ACK.
165 head = vq->vq_avail_idx;
166 flags = vq->vq_packed.cached_flags;
167 desc[head].addr = cvq->virtio_net_hdr_mem;
168 desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
171 if (++vq->vq_avail_idx >= vq->vq_nentries) {
172 vq->vq_avail_idx -= vq->vq_nentries;
173 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
176 for (k = 0; k < pkt_num; k++) {
177 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
178 + sizeof(struct virtio_net_ctrl_hdr)
179 + sizeof(ctrl->status) + sizeof(uint8_t) * sum;
180 desc[vq->vq_avail_idx].len = dlen[k];
181 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
182 vq->vq_packed.cached_flags;
186 if (++vq->vq_avail_idx >= vq->vq_nentries) {
187 vq->vq_avail_idx -= vq->vq_nentries;
188 vq->vq_packed.cached_flags ^=
189 VRING_PACKED_DESC_F_AVAIL_USED;
193 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
194 + sizeof(struct virtio_net_ctrl_hdr);
195 desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
196 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
197 vq->vq_packed.cached_flags;
200 if (++vq->vq_avail_idx >= vq->vq_nentries) {
201 vq->vq_avail_idx -= vq->vq_nentries;
202 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
205 virtio_wmb(vq->hw->weak_barriers);
206 desc[head].flags = VRING_DESC_F_NEXT | flags;
208 virtio_wmb(vq->hw->weak_barriers);
209 virtqueue_notify(vq);
211 /* wait for used descriptors in virtqueue */
212 while (!desc_is_used(&desc[head], vq))
215 virtio_rmb(vq->hw->weak_barriers);
217 /* now get used descriptors */
218 vq->vq_free_cnt += nb_descs;
219 vq->vq_used_cons_idx += nb_descs;
220 if (vq->vq_used_cons_idx >= vq->vq_nentries) {
221 vq->vq_used_cons_idx -= vq->vq_nentries;
222 vq->vq_packed.used_wrap_counter ^= 1;
225 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n"
226 "vq->vq_avail_idx=%d\n"
227 "vq->vq_used_cons_idx=%d\n"
228 "vq->vq_packed.cached_flags=0x%x\n"
229 "vq->vq_packed.used_wrap_counter=%d\n",
232 vq->vq_used_cons_idx,
233 vq->vq_packed.cached_flags,
234 vq->vq_packed.used_wrap_counter);
236 result = cvq->virtio_net_hdr_mz->addr;
240 static struct virtio_pmd_ctrl *
241 virtio_send_command_split(struct virtnet_ctl *cvq,
242 struct virtio_pmd_ctrl *ctrl,
243 int *dlen, int pkt_num)
245 struct virtio_pmd_ctrl *result;
246 struct virtqueue *vq = cvq->vq;
250 head = vq->vq_desc_head_idx;
253 * Format is enforced in qemu code:
254 * One TX packet for header;
255 * At least one TX packet per argument;
256 * One RX packet for ACK.
258 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
259 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
260 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
262 i = vq->vq_split.ring.desc[head].next;
264 for (k = 0; k < pkt_num; k++) {
265 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
266 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
267 + sizeof(struct virtio_net_ctrl_hdr)
268 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
269 vq->vq_split.ring.desc[i].len = dlen[k];
272 i = vq->vq_split.ring.desc[i].next;
275 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
276 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
277 + sizeof(struct virtio_net_ctrl_hdr);
278 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
281 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
283 vq_update_avail_ring(vq, head);
284 vq_update_avail_idx(vq);
286 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
288 virtqueue_notify(vq);
290 while (virtqueue_nused(vq) == 0)
293 while (virtqueue_nused(vq)) {
294 uint32_t idx, desc_idx, used_idx;
295 struct vring_used_elem *uep;
297 used_idx = (uint32_t)(vq->vq_used_cons_idx
298 & (vq->vq_nentries - 1));
299 uep = &vq->vq_split.ring.used->ring[used_idx];
300 idx = (uint32_t) uep->id;
303 while (vq->vq_split.ring.desc[desc_idx].flags &
305 desc_idx = vq->vq_split.ring.desc[desc_idx].next;
309 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
310 vq->vq_desc_head_idx = idx;
312 vq->vq_used_cons_idx++;
316 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
317 vq->vq_free_cnt, vq->vq_desc_head_idx);
319 result = cvq->virtio_net_hdr_mz->addr;
324 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
325 int *dlen, int pkt_num)
327 virtio_net_ctrl_ack status = ~0;
328 struct virtio_pmd_ctrl *result;
329 struct virtqueue *vq;
331 ctrl->status = status;
333 if (!cvq || !cvq->vq) {
334 PMD_INIT_LOG(ERR, "Control queue is not supported.");
338 rte_spinlock_lock(&cvq->lock);
341 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
342 "vq->hw->cvq = %p vq = %p",
343 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
345 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
346 rte_spinlock_unlock(&cvq->lock);
350 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
351 sizeof(struct virtio_pmd_ctrl));
353 if (vtpci_packed_queue(vq->hw))
354 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
356 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num);
358 rte_spinlock_unlock(&cvq->lock);
359 return result->status;
363 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
365 struct virtio_hw *hw = dev->data->dev_private;
366 struct virtio_pmd_ctrl ctrl;
370 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
371 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
372 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
374 dlen[0] = sizeof(uint16_t);
376 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
378 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
379 "failed, this is too late now...");
387 virtio_dev_queue_release(void *queue __rte_unused)
393 virtio_get_nr_vq(struct virtio_hw *hw)
395 uint16_t nr_vq = hw->max_queue_pairs * 2;
397 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
404 virtio_init_vring(struct virtqueue *vq)
406 int size = vq->vq_nentries;
407 uint8_t *ring_mem = vq->vq_ring_virt_mem;
409 PMD_INIT_FUNC_TRACE();
411 memset(ring_mem, 0, vq->vq_ring_size);
413 vq->vq_used_cons_idx = 0;
414 vq->vq_desc_head_idx = 0;
415 vq->vq_avail_idx = 0;
416 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
417 vq->vq_free_cnt = vq->vq_nentries;
418 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
419 if (vtpci_packed_queue(vq->hw)) {
420 vring_init_packed(&vq->vq_packed.ring, ring_mem,
421 VIRTIO_PCI_VRING_ALIGN, size);
422 vring_desc_init_packed(vq, size);
424 struct vring *vr = &vq->vq_split.ring;
426 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
427 vring_desc_init_split(vr->desc, size);
430 * Disable device(host) interrupting guest
432 virtqueue_disable_intr(vq);
436 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
438 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
439 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
440 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
441 unsigned int vq_size, size;
442 struct virtio_hw *hw = dev->data->dev_private;
443 struct virtnet_rx *rxvq = NULL;
444 struct virtnet_tx *txvq = NULL;
445 struct virtnet_ctl *cvq = NULL;
446 struct virtqueue *vq;
447 size_t sz_hdr_mz = 0;
448 void *sw_ring = NULL;
449 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
451 int numa_node = dev->device->numa_node;
453 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
454 vtpci_queue_idx, numa_node);
457 * Read the virtqueue size from the Queue Size field
458 * Always power of 2 and if 0 virtqueue does not exist
460 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
461 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
463 PMD_INIT_LOG(ERR, "virtqueue does not exist");
467 if (!vtpci_packed_queue(hw) && !rte_is_power_of_2(vq_size)) {
468 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2");
472 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
473 dev->data->port_id, vtpci_queue_idx);
475 size = RTE_ALIGN_CEIL(sizeof(*vq) +
476 vq_size * sizeof(struct vq_desc_extra),
477 RTE_CACHE_LINE_SIZE);
478 if (queue_type == VTNET_TQ) {
480 * For each xmit packet, allocate a virtio_net_hdr
481 * and indirect ring elements
483 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
484 } else if (queue_type == VTNET_CQ) {
485 /* Allocate a page for control vq command, data and status */
486 sz_hdr_mz = PAGE_SIZE;
489 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
492 PMD_INIT_LOG(ERR, "can not allocate vq");
495 hw->vqs[vtpci_queue_idx] = vq;
498 vq->vq_queue_index = vtpci_queue_idx;
499 vq->vq_nentries = vq_size;
500 if (vtpci_packed_queue(hw)) {
501 vq->vq_packed.used_wrap_counter = 1;
502 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL;
503 vq->vq_packed.event_flags_shadow = 0;
504 if (queue_type == VTNET_RQ)
505 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
509 * Reserve a memzone for vring elements
511 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN);
512 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
513 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
514 size, vq->vq_ring_size);
516 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
517 numa_node, RTE_MEMZONE_IOVA_CONTIG,
518 VIRTIO_PCI_VRING_ALIGN);
520 if (rte_errno == EEXIST)
521 mz = rte_memzone_lookup(vq_name);
528 memset(mz->addr, 0, mz->len);
530 vq->vq_ring_mem = mz->iova;
531 vq->vq_ring_virt_mem = mz->addr;
532 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
534 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
535 (uint64_t)(uintptr_t)mz->addr);
537 virtio_init_vring(vq);
540 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
541 dev->data->port_id, vtpci_queue_idx);
542 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
543 numa_node, RTE_MEMZONE_IOVA_CONTIG,
544 RTE_CACHE_LINE_SIZE);
545 if (hdr_mz == NULL) {
546 if (rte_errno == EEXIST)
547 hdr_mz = rte_memzone_lookup(vq_hdr_name);
548 if (hdr_mz == NULL) {
555 if (queue_type == VTNET_RQ) {
556 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
557 sizeof(vq->sw_ring[0]);
559 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
560 RTE_CACHE_LINE_SIZE, numa_node);
562 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
567 vq->sw_ring = sw_ring;
570 rxvq->port_id = dev->data->port_id;
572 } else if (queue_type == VTNET_TQ) {
575 txvq->port_id = dev->data->port_id;
577 txvq->virtio_net_hdr_mz = hdr_mz;
578 txvq->virtio_net_hdr_mem = hdr_mz->iova;
579 } else if (queue_type == VTNET_CQ) {
583 cvq->virtio_net_hdr_mz = hdr_mz;
584 cvq->virtio_net_hdr_mem = hdr_mz->iova;
585 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
590 /* For virtio_user case (that is when hw->virtio_user_dev is not NULL),
591 * we use virtual address. And we need properly set _offset_, please see
592 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
594 if (!hw->virtio_user_dev)
595 vq->offset = offsetof(struct rte_mbuf, buf_iova);
597 vq->vq_ring_mem = (uintptr_t)mz->addr;
598 vq->offset = offsetof(struct rte_mbuf, buf_addr);
599 if (queue_type == VTNET_TQ)
600 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
601 else if (queue_type == VTNET_CQ)
602 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
605 if (queue_type == VTNET_TQ) {
606 struct virtio_tx_region *txr;
610 memset(txr, 0, vq_size * sizeof(*txr));
611 for (i = 0; i < vq_size; i++) {
612 struct vring_desc *start_dp = txr[i].tx_indir;
614 /* first indirect descriptor is always the tx header */
615 if (!vtpci_packed_queue(hw)) {
616 vring_desc_init_split(start_dp,
617 RTE_DIM(txr[i].tx_indir));
618 start_dp->addr = txvq->virtio_net_hdr_mem
620 + offsetof(struct virtio_tx_region,
622 start_dp->len = hw->vtnet_hdr_size;
623 start_dp->flags = VRING_DESC_F_NEXT;
628 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
629 PMD_INIT_LOG(ERR, "setup_queue failed");
637 rte_memzone_free(hdr_mz);
638 rte_memzone_free(mz);
645 virtio_free_queues(struct virtio_hw *hw)
647 uint16_t nr_vq = virtio_get_nr_vq(hw);
648 struct virtqueue *vq;
655 for (i = 0; i < nr_vq; i++) {
660 queue_type = virtio_get_queue_type(hw, i);
661 if (queue_type == VTNET_RQ) {
662 rte_free(vq->sw_ring);
663 rte_memzone_free(vq->rxq.mz);
664 } else if (queue_type == VTNET_TQ) {
665 rte_memzone_free(vq->txq.mz);
666 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
668 rte_memzone_free(vq->cq.mz);
669 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
681 virtio_alloc_queues(struct rte_eth_dev *dev)
683 struct virtio_hw *hw = dev->data->dev_private;
684 uint16_t nr_vq = virtio_get_nr_vq(hw);
688 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
690 PMD_INIT_LOG(ERR, "failed to allocate vqs");
694 for (i = 0; i < nr_vq; i++) {
695 ret = virtio_init_queue(dev, i);
697 virtio_free_queues(hw);
705 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
708 virtio_dev_close(struct rte_eth_dev *dev)
710 struct virtio_hw *hw = dev->data->dev_private;
711 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
713 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
720 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
721 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
723 virtio_queues_unbind_intr(dev);
725 if (intr_conf->lsc || intr_conf->rxq) {
726 virtio_intr_disable(dev);
727 rte_intr_efd_disable(dev->intr_handle);
728 rte_free(dev->intr_handle->intr_vec);
729 dev->intr_handle->intr_vec = NULL;
733 virtio_dev_free_mbufs(dev);
734 virtio_free_queues(hw);
736 #ifdef RTE_VIRTIO_USER
737 if (hw->virtio_user_dev)
738 virtio_user_dev_uninit(hw->virtio_user_dev);
742 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(dev));
744 rte_pci_ioport_unmap(VTPCI_IO(hw));
751 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
753 struct virtio_hw *hw = dev->data->dev_private;
754 struct virtio_pmd_ctrl ctrl;
758 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
759 PMD_INIT_LOG(INFO, "host does not support rx control");
763 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
764 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
768 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
770 PMD_INIT_LOG(ERR, "Failed to enable promisc");
778 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
780 struct virtio_hw *hw = dev->data->dev_private;
781 struct virtio_pmd_ctrl ctrl;
785 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
786 PMD_INIT_LOG(INFO, "host does not support rx control");
790 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
791 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
795 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
797 PMD_INIT_LOG(ERR, "Failed to disable promisc");
805 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
807 struct virtio_hw *hw = dev->data->dev_private;
808 struct virtio_pmd_ctrl ctrl;
812 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
813 PMD_INIT_LOG(INFO, "host does not support rx control");
817 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
818 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
822 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
824 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
832 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
834 struct virtio_hw *hw = dev->data->dev_private;
835 struct virtio_pmd_ctrl ctrl;
839 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
840 PMD_INIT_LOG(INFO, "host does not support rx control");
844 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
845 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
849 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
851 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
858 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
860 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
862 struct virtio_hw *hw = dev->data->dev_private;
863 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
865 uint32_t frame_size = mtu + ether_hdr_len;
866 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
868 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
870 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) {
871 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
872 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
879 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
881 struct virtio_hw *hw = dev->data->dev_private;
882 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
883 struct virtqueue *vq = rxvq->vq;
885 virtqueue_enable_intr(vq);
886 virtio_mb(hw->weak_barriers);
891 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
893 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
894 struct virtqueue *vq = rxvq->vq;
896 virtqueue_disable_intr(vq);
901 * dev_ops for virtio, bare necessities for basic operation
903 static const struct eth_dev_ops virtio_eth_dev_ops = {
904 .dev_configure = virtio_dev_configure,
905 .dev_start = virtio_dev_start,
906 .dev_stop = virtio_dev_stop,
907 .dev_close = virtio_dev_close,
908 .promiscuous_enable = virtio_dev_promiscuous_enable,
909 .promiscuous_disable = virtio_dev_promiscuous_disable,
910 .allmulticast_enable = virtio_dev_allmulticast_enable,
911 .allmulticast_disable = virtio_dev_allmulticast_disable,
912 .mtu_set = virtio_mtu_set,
913 .dev_infos_get = virtio_dev_info_get,
914 .stats_get = virtio_dev_stats_get,
915 .xstats_get = virtio_dev_xstats_get,
916 .xstats_get_names = virtio_dev_xstats_get_names,
917 .stats_reset = virtio_dev_stats_reset,
918 .xstats_reset = virtio_dev_stats_reset,
919 .link_update = virtio_dev_link_update,
920 .vlan_offload_set = virtio_dev_vlan_offload_set,
921 .rx_queue_setup = virtio_dev_rx_queue_setup,
922 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
923 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
924 .rx_queue_release = virtio_dev_queue_release,
925 .tx_queue_setup = virtio_dev_tx_queue_setup,
926 .tx_queue_release = virtio_dev_queue_release,
927 /* collect stats per queue */
928 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
929 .vlan_filter_set = virtio_vlan_filter_set,
930 .mac_addr_add = virtio_mac_addr_add,
931 .mac_addr_remove = virtio_mac_addr_remove,
932 .mac_addr_set = virtio_mac_addr_set,
936 * dev_ops for virtio-user in secondary processes, as we just have
937 * some limited supports currently.
939 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
940 .dev_infos_get = virtio_dev_info_get,
941 .stats_get = virtio_dev_stats_get,
942 .xstats_get = virtio_dev_xstats_get,
943 .xstats_get_names = virtio_dev_xstats_get_names,
944 .stats_reset = virtio_dev_stats_reset,
945 .xstats_reset = virtio_dev_stats_reset,
946 /* collect stats per queue */
947 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
951 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
955 for (i = 0; i < dev->data->nb_tx_queues; i++) {
956 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
960 stats->opackets += txvq->stats.packets;
961 stats->obytes += txvq->stats.bytes;
963 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
964 stats->q_opackets[i] = txvq->stats.packets;
965 stats->q_obytes[i] = txvq->stats.bytes;
969 for (i = 0; i < dev->data->nb_rx_queues; i++) {
970 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
974 stats->ipackets += rxvq->stats.packets;
975 stats->ibytes += rxvq->stats.bytes;
976 stats->ierrors += rxvq->stats.errors;
978 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
979 stats->q_ipackets[i] = rxvq->stats.packets;
980 stats->q_ibytes[i] = rxvq->stats.bytes;
984 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
987 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
988 struct rte_eth_xstat_name *xstats_names,
989 __rte_unused unsigned limit)
995 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
996 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
998 if (xstats_names != NULL) {
999 /* Note: limit checked in rte_eth_xstats_names() */
1001 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1002 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1005 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1006 snprintf(xstats_names[count].name,
1007 sizeof(xstats_names[count].name),
1009 rte_virtio_rxq_stat_strings[t].name);
1014 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1015 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1018 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1019 snprintf(xstats_names[count].name,
1020 sizeof(xstats_names[count].name),
1022 rte_virtio_txq_stat_strings[t].name);
1032 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
1038 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
1039 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1044 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1045 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1052 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1053 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1054 rte_virtio_rxq_stat_strings[t].offset);
1055 xstats[count].id = count;
1060 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1061 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1068 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1069 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1070 rte_virtio_txq_stat_strings[t].offset);
1071 xstats[count].id = count;
1080 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1082 virtio_update_stats(dev, stats);
1088 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1092 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1093 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1097 txvq->stats.packets = 0;
1098 txvq->stats.bytes = 0;
1099 txvq->stats.multicast = 0;
1100 txvq->stats.broadcast = 0;
1101 memset(txvq->stats.size_bins, 0,
1102 sizeof(txvq->stats.size_bins[0]) * 8);
1105 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1106 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1110 rxvq->stats.packets = 0;
1111 rxvq->stats.bytes = 0;
1112 rxvq->stats.errors = 0;
1113 rxvq->stats.multicast = 0;
1114 rxvq->stats.broadcast = 0;
1115 memset(rxvq->stats.size_bins, 0,
1116 sizeof(rxvq->stats.size_bins[0]) * 8);
1123 virtio_set_hwaddr(struct virtio_hw *hw)
1125 vtpci_write_dev_config(hw,
1126 offsetof(struct virtio_net_config, mac),
1127 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1131 virtio_get_hwaddr(struct virtio_hw *hw)
1133 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1134 vtpci_read_dev_config(hw,
1135 offsetof(struct virtio_net_config, mac),
1136 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1138 rte_eth_random_addr(&hw->mac_addr[0]);
1139 virtio_set_hwaddr(hw);
1144 virtio_mac_table_set(struct virtio_hw *hw,
1145 const struct virtio_net_ctrl_mac *uc,
1146 const struct virtio_net_ctrl_mac *mc)
1148 struct virtio_pmd_ctrl ctrl;
1151 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1152 PMD_DRV_LOG(INFO, "host does not support mac table");
1156 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1157 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1159 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries);
1160 memcpy(ctrl.data, uc, len[0]);
1162 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries);
1163 memcpy(ctrl.data + len[0], mc, len[1]);
1165 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1167 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1172 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr,
1173 uint32_t index, uint32_t vmdq __rte_unused)
1175 struct virtio_hw *hw = dev->data->dev_private;
1176 const struct rte_ether_addr *addrs = dev->data->mac_addrs;
1178 struct virtio_net_ctrl_mac *uc, *mc;
1180 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1181 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1185 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1186 sizeof(uc->entries));
1188 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1189 sizeof(mc->entries));
1192 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1193 const struct rte_ether_addr *addr
1194 = (i == index) ? mac_addr : addrs + i;
1195 struct virtio_net_ctrl_mac *tbl
1196 = rte_is_multicast_ether_addr(addr) ? mc : uc;
1198 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN);
1201 return virtio_mac_table_set(hw, uc, mc);
1205 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1207 struct virtio_hw *hw = dev->data->dev_private;
1208 struct rte_ether_addr *addrs = dev->data->mac_addrs;
1209 struct virtio_net_ctrl_mac *uc, *mc;
1212 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1213 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1217 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1218 sizeof(uc->entries));
1220 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1221 sizeof(mc->entries));
1224 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1225 struct virtio_net_ctrl_mac *tbl;
1227 if (i == index || rte_is_zero_ether_addr(addrs + i))
1230 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc;
1231 memcpy(&tbl->macs[tbl->entries++], addrs + i,
1232 RTE_ETHER_ADDR_LEN);
1235 virtio_mac_table_set(hw, uc, mc);
1239 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
1241 struct virtio_hw *hw = dev->data->dev_private;
1243 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN);
1245 /* Use atomic update if available */
1246 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1247 struct virtio_pmd_ctrl ctrl;
1248 int len = RTE_ETHER_ADDR_LEN;
1250 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1251 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1253 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN);
1254 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1257 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1260 virtio_set_hwaddr(hw);
1265 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1267 struct virtio_hw *hw = dev->data->dev_private;
1268 struct virtio_pmd_ctrl ctrl;
1271 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1274 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1275 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1276 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1277 len = sizeof(vlan_id);
1279 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1283 virtio_intr_unmask(struct rte_eth_dev *dev)
1285 struct virtio_hw *hw = dev->data->dev_private;
1287 if (rte_intr_ack(dev->intr_handle) < 0)
1290 if (!hw->virtio_user_dev)
1291 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1297 virtio_intr_enable(struct rte_eth_dev *dev)
1299 struct virtio_hw *hw = dev->data->dev_private;
1301 if (rte_intr_enable(dev->intr_handle) < 0)
1304 if (!hw->virtio_user_dev)
1305 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1311 virtio_intr_disable(struct rte_eth_dev *dev)
1313 struct virtio_hw *hw = dev->data->dev_private;
1315 if (rte_intr_disable(dev->intr_handle) < 0)
1318 if (!hw->virtio_user_dev)
1319 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1325 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1327 uint64_t host_features;
1329 /* Prepare guest_features: feature that driver wants to support */
1330 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1333 /* Read device(host) feature bits */
1334 host_features = VTPCI_OPS(hw)->get_features(hw);
1335 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1338 /* If supported, ensure MTU value is valid before acknowledging it. */
1339 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1340 struct virtio_net_config config;
1342 vtpci_read_dev_config(hw,
1343 offsetof(struct virtio_net_config, mtu),
1344 &config.mtu, sizeof(config.mtu));
1346 if (config.mtu < RTE_ETHER_MIN_MTU)
1347 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1351 * Negotiate features: Subset of device feature bits are written back
1352 * guest feature bits.
1354 hw->guest_features = req_features;
1355 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1356 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1357 hw->guest_features);
1359 if (hw->modern && !vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1361 "VIRTIO_F_VERSION_1 features is not enabled.");
1365 if (hw->modern || hw->virtio_user_dev) {
1366 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1367 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1369 "failed to set FEATURES_OK status!");
1374 hw->req_guest_features = req_features;
1380 virtio_dev_pause(struct rte_eth_dev *dev)
1382 struct virtio_hw *hw = dev->data->dev_private;
1384 rte_spinlock_lock(&hw->state_lock);
1386 if (hw->started == 0) {
1387 /* Device is just stopped. */
1388 rte_spinlock_unlock(&hw->state_lock);
1393 * Prevent the worker threads from touching queues to avoid contention,
1394 * 1 ms should be enough for the ongoing Tx function to finish.
1401 * Recover hw state to let the worker threads continue.
1404 virtio_dev_resume(struct rte_eth_dev *dev)
1406 struct virtio_hw *hw = dev->data->dev_private;
1409 rte_spinlock_unlock(&hw->state_lock);
1413 * Should be called only after device is paused.
1416 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1419 struct virtio_hw *hw = dev->data->dev_private;
1420 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1423 hw->inject_pkts = tx_pkts;
1424 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1425 hw->inject_pkts = NULL;
1431 virtio_notify_peers(struct rte_eth_dev *dev)
1433 struct virtio_hw *hw = dev->data->dev_private;
1434 struct virtnet_rx *rxvq;
1435 struct rte_mbuf *rarp_mbuf;
1437 if (!dev->data->rx_queues)
1440 rxvq = dev->data->rx_queues[0];
1444 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1445 (struct rte_ether_addr *)hw->mac_addr);
1446 if (rarp_mbuf == NULL) {
1447 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1451 /* If virtio port just stopped, no need to send RARP */
1452 if (virtio_dev_pause(dev) < 0) {
1453 rte_pktmbuf_free(rarp_mbuf);
1457 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1458 virtio_dev_resume(dev);
1462 virtio_ack_link_announce(struct rte_eth_dev *dev)
1464 struct virtio_hw *hw = dev->data->dev_private;
1465 struct virtio_pmd_ctrl ctrl;
1467 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1468 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1470 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1474 * Process virtio config changed interrupt. Call the callback
1475 * if link state changed, generate gratuitous RARP packet if
1476 * the status indicates an ANNOUNCE.
1479 virtio_interrupt_handler(void *param)
1481 struct rte_eth_dev *dev = param;
1482 struct virtio_hw *hw = dev->data->dev_private;
1486 /* Read interrupt status which clears interrupt */
1487 isr = vtpci_isr(hw);
1488 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1490 if (virtio_intr_unmask(dev) < 0)
1491 PMD_DRV_LOG(ERR, "interrupt enable failed");
1493 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1494 if (virtio_dev_link_update(dev, 0) == 0)
1495 rte_eth_dev_callback_process(dev,
1496 RTE_ETH_EVENT_INTR_LSC,
1499 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1500 vtpci_read_dev_config(hw,
1501 offsetof(struct virtio_net_config, status),
1502 &status, sizeof(status));
1503 if (status & VIRTIO_NET_S_ANNOUNCE) {
1504 virtio_notify_peers(dev);
1506 virtio_ack_link_announce(dev);
1512 /* set rx and tx handlers according to what is supported */
1514 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1516 struct virtio_hw *hw = eth_dev->data->dev_private;
1518 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare;
1519 if (vtpci_packed_queue(hw)) {
1521 "virtio: using packed ring %s Tx path on port %u",
1522 hw->use_vec_tx ? "vectorized" : "standard",
1523 eth_dev->data->port_id);
1525 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec;
1527 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1529 if (hw->use_inorder_tx) {
1530 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1531 eth_dev->data->port_id);
1532 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1534 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1535 eth_dev->data->port_id);
1536 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1540 if (vtpci_packed_queue(hw)) {
1541 if (hw->use_vec_rx) {
1543 "virtio: using packed ring vectorized Rx path on port %u",
1544 eth_dev->data->port_id);
1545 eth_dev->rx_pkt_burst =
1546 &virtio_recv_pkts_packed_vec;
1547 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1549 "virtio: using packed ring mergeable buffer Rx path on port %u",
1550 eth_dev->data->port_id);
1551 eth_dev->rx_pkt_burst =
1552 &virtio_recv_mergeable_pkts_packed;
1555 "virtio: using packed ring standard Rx path on port %u",
1556 eth_dev->data->port_id);
1557 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1560 if (hw->use_vec_rx) {
1561 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u",
1562 eth_dev->data->port_id);
1563 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1564 } else if (hw->use_inorder_rx) {
1566 "virtio: using inorder Rx path on port %u",
1567 eth_dev->data->port_id);
1568 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1569 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1571 "virtio: using mergeable buffer Rx path on port %u",
1572 eth_dev->data->port_id);
1573 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1575 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1576 eth_dev->data->port_id);
1577 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1583 /* Only support 1:1 queue/interrupt mapping so far.
1584 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1585 * interrupt vectors (<N+1).
1588 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1591 struct virtio_hw *hw = dev->data->dev_private;
1593 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1594 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1595 dev->intr_handle->intr_vec[i] = i + 1;
1596 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1597 VIRTIO_MSI_NO_VECTOR) {
1598 PMD_DRV_LOG(ERR, "failed to set queue vector");
1607 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1610 struct virtio_hw *hw = dev->data->dev_private;
1612 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1613 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1614 VTPCI_OPS(hw)->set_queue_irq(hw,
1615 hw->vqs[i * VTNET_CQ],
1616 VIRTIO_MSI_NO_VECTOR);
1620 virtio_configure_intr(struct rte_eth_dev *dev)
1622 struct virtio_hw *hw = dev->data->dev_private;
1624 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1625 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1629 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1630 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1634 if (!dev->intr_handle->intr_vec) {
1635 dev->intr_handle->intr_vec =
1636 rte_zmalloc("intr_vec",
1637 hw->max_queue_pairs * sizeof(int), 0);
1638 if (!dev->intr_handle->intr_vec) {
1639 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1640 hw->max_queue_pairs);
1645 /* Re-register callback to update max_intr */
1646 rte_intr_callback_unregister(dev->intr_handle,
1647 virtio_interrupt_handler,
1649 rte_intr_callback_register(dev->intr_handle,
1650 virtio_interrupt_handler,
1653 /* DO NOT try to remove this! This function will enable msix, or QEMU
1654 * will encounter SIGSEGV when DRIVER_OK is sent.
1655 * And for legacy devices, this should be done before queue/vec binding
1656 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1657 * (22) will be ignored.
1659 if (virtio_intr_enable(dev) < 0) {
1660 PMD_DRV_LOG(ERR, "interrupt enable failed");
1664 if (virtio_queues_bind_intr(dev) < 0) {
1665 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1671 #define SPEED_UNKNOWN 0xffffffff
1672 #define DUPLEX_UNKNOWN 0xff
1673 /* reset device and renegotiate features if needed */
1675 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1677 struct virtio_hw *hw = eth_dev->data->dev_private;
1678 struct virtio_net_config *config;
1679 struct virtio_net_config local_config;
1680 struct rte_pci_device *pci_dev = NULL;
1683 /* Reset the device although not necessary at startup */
1687 virtio_dev_free_mbufs(eth_dev);
1688 virtio_free_queues(hw);
1691 /* Tell the host we've noticed this device. */
1692 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1694 /* Tell the host we've known how to drive the device. */
1695 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1696 if (virtio_negotiate_features(hw, req_features) < 0)
1699 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1701 if (!hw->virtio_user_dev)
1702 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1704 /* If host does not support both status and MSI-X then disable LSC */
1705 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1706 hw->use_msix != VIRTIO_MSIX_NONE)
1707 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1709 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1711 /* Setting up rx_header size for the device */
1712 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1713 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) ||
1714 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED))
1715 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1717 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1719 /* Copy the permanent MAC address to: virtio_hw */
1720 virtio_get_hwaddr(hw);
1721 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr,
1722 ð_dev->data->mac_addrs[0]);
1724 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1725 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1726 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1728 if (hw->speed == SPEED_UNKNOWN) {
1729 if (vtpci_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) {
1730 config = &local_config;
1731 vtpci_read_dev_config(hw,
1732 offsetof(struct virtio_net_config, speed),
1733 &config->speed, sizeof(config->speed));
1734 vtpci_read_dev_config(hw,
1735 offsetof(struct virtio_net_config, duplex),
1736 &config->duplex, sizeof(config->duplex));
1737 hw->speed = config->speed;
1738 hw->duplex = config->duplex;
1741 if (hw->speed == SPEED_UNKNOWN)
1742 hw->speed = ETH_SPEED_NUM_10G;
1743 if (hw->duplex == DUPLEX_UNKNOWN)
1744 hw->duplex = ETH_LINK_FULL_DUPLEX;
1745 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d",
1746 hw->speed, hw->duplex);
1747 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1748 config = &local_config;
1750 vtpci_read_dev_config(hw,
1751 offsetof(struct virtio_net_config, mac),
1752 &config->mac, sizeof(config->mac));
1754 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1755 vtpci_read_dev_config(hw,
1756 offsetof(struct virtio_net_config, status),
1757 &config->status, sizeof(config->status));
1760 "VIRTIO_NET_F_STATUS is not supported");
1764 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1765 vtpci_read_dev_config(hw,
1766 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1767 &config->max_virtqueue_pairs,
1768 sizeof(config->max_virtqueue_pairs));
1771 "VIRTIO_NET_F_MQ is not supported");
1772 config->max_virtqueue_pairs = 1;
1775 hw->max_queue_pairs = config->max_virtqueue_pairs;
1777 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1778 vtpci_read_dev_config(hw,
1779 offsetof(struct virtio_net_config, mtu),
1781 sizeof(config->mtu));
1784 * MTU value has already been checked at negotiation
1785 * time, but check again in case it has changed since
1786 * then, which should not happen.
1788 if (config->mtu < RTE_ETHER_MIN_MTU) {
1789 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1794 hw->max_mtu = config->mtu;
1795 /* Set initial MTU to maximum one supported by vhost */
1796 eth_dev->data->mtu = config->mtu;
1799 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1800 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1803 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1804 config->max_virtqueue_pairs);
1805 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1807 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1808 config->mac[0], config->mac[1],
1809 config->mac[2], config->mac[3],
1810 config->mac[4], config->mac[5]);
1812 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1813 hw->max_queue_pairs = 1;
1814 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1815 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1818 ret = virtio_alloc_queues(eth_dev);
1822 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1823 if (virtio_configure_intr(eth_dev) < 0) {
1824 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1825 virtio_free_queues(hw);
1830 vtpci_reinit_complete(hw);
1833 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1834 eth_dev->data->port_id, pci_dev->id.vendor_id,
1835 pci_dev->id.device_id);
1841 * Remap the PCI device again (IO port map for legacy device and
1842 * memory map for modern device), so that the secondary process
1843 * could have the PCI initiated correctly.
1846 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1850 * We don't have to re-parse the PCI config space, since
1851 * rte_pci_map_device() makes sure the mapped address
1852 * in secondary process would equal to the one mapped in
1853 * the primary process: error will be returned if that
1854 * requirement is not met.
1856 * That said, we could simply reuse all cap pointers
1857 * (such as dev_cfg, common_cfg, etc.) parsed from the
1858 * primary process, which is stored in shared memory.
1860 if (rte_pci_map_device(pci_dev)) {
1861 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1865 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1873 virtio_set_vtpci_ops(struct virtio_hw *hw)
1875 #ifdef RTE_VIRTIO_USER
1876 if (hw->virtio_user_dev)
1877 VTPCI_OPS(hw) = &virtio_user_ops;
1881 VTPCI_OPS(hw) = &modern_ops;
1883 VTPCI_OPS(hw) = &legacy_ops;
1887 * This function is based on probe() function in virtio_pci.c
1888 * It returns 0 on success.
1891 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1893 struct virtio_hw *hw = eth_dev->data->dev_private;
1894 uint32_t speed = SPEED_UNKNOWN;
1898 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) {
1900 "Not sufficient headroom required = %d, avail = %d",
1901 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf),
1902 RTE_PKTMBUF_HEADROOM);
1907 eth_dev->dev_ops = &virtio_eth_dev_ops;
1908 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done;
1910 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1911 if (!hw->virtio_user_dev) {
1912 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1917 virtio_set_vtpci_ops(hw);
1918 set_rxtx_funcs(eth_dev);
1922 ret = virtio_dev_devargs_parse(eth_dev->device->devargs,
1923 NULL, &speed, &vectorized);
1928 /* Allocate memory for storing MAC addresses */
1929 eth_dev->data->mac_addrs = rte_zmalloc("virtio",
1930 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0);
1931 if (eth_dev->data->mac_addrs == NULL) {
1933 "Failed to allocate %d bytes needed to store MAC addresses",
1934 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN);
1938 hw->port_id = eth_dev->data->port_id;
1939 /* For virtio_user case the hw->virtio_user_dev is populated by
1940 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1942 if (!hw->virtio_user_dev) {
1943 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1945 goto err_vtpci_init;
1948 rte_spinlock_init(&hw->state_lock);
1950 /* reset device and negotiate default features */
1951 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1953 goto err_virtio_init;
1956 if (!vtpci_packed_queue(hw)) {
1959 #if !defined(CC_AVX512_SUPPORT)
1961 "building environment do not support packed ring vectorized");
1974 if (!hw->virtio_user_dev) {
1975 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1977 rte_pci_ioport_unmap(VTPCI_IO(hw));
1980 rte_free(eth_dev->data->mac_addrs);
1981 eth_dev->data->mac_addrs = NULL;
1986 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1988 PMD_INIT_FUNC_TRACE();
1990 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1993 virtio_dev_stop(eth_dev);
1994 virtio_dev_close(eth_dev);
1996 eth_dev->dev_ops = NULL;
1997 eth_dev->tx_pkt_burst = NULL;
1998 eth_dev->rx_pkt_burst = NULL;
2000 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
2006 static int vdpa_check_handler(__rte_unused const char *key,
2007 const char *value, void *ret_val)
2009 if (strcmp(value, "1") == 0)
2010 *(int *)ret_val = 1;
2012 *(int *)ret_val = 0;
2019 virtio_dev_speed_capa_get(uint32_t speed)
2022 case ETH_SPEED_NUM_10G:
2023 return ETH_LINK_SPEED_10G;
2024 case ETH_SPEED_NUM_20G:
2025 return ETH_LINK_SPEED_20G;
2026 case ETH_SPEED_NUM_25G:
2027 return ETH_LINK_SPEED_25G;
2028 case ETH_SPEED_NUM_40G:
2029 return ETH_LINK_SPEED_40G;
2030 case ETH_SPEED_NUM_50G:
2031 return ETH_LINK_SPEED_50G;
2032 case ETH_SPEED_NUM_56G:
2033 return ETH_LINK_SPEED_56G;
2034 case ETH_SPEED_NUM_100G:
2035 return ETH_LINK_SPEED_100G;
2041 static int vectorized_check_handler(__rte_unused const char *key,
2042 const char *value, void *ret_val)
2044 if (strcmp(value, "1") == 0)
2045 *(int *)ret_val = 1;
2047 *(int *)ret_val = 0;
2052 #define VIRTIO_ARG_SPEED "speed"
2053 #define VIRTIO_ARG_VDPA "vdpa"
2054 #define VIRTIO_ARG_VECTORIZED "vectorized"
2058 link_speed_handler(const char *key __rte_unused,
2059 const char *value, void *ret_val)
2062 if (!value || !ret_val)
2064 val = strtoul(value, NULL, 0);
2065 /* validate input */
2066 if (virtio_dev_speed_capa_get(val) == 0)
2068 *(uint32_t *)ret_val = val;
2075 virtio_dev_devargs_parse(struct rte_devargs *devargs, int *vdpa,
2076 uint32_t *speed, int *vectorized)
2078 struct rte_kvargs *kvlist;
2081 if (devargs == NULL)
2084 kvlist = rte_kvargs_parse(devargs->args, NULL);
2085 if (kvlist == NULL) {
2086 PMD_INIT_LOG(ERR, "error when parsing param");
2089 if (vdpa && rte_kvargs_count(kvlist, VIRTIO_ARG_VDPA) == 1) {
2090 /* vdpa mode selected when there's a key-value pair:
2093 ret = rte_kvargs_process(kvlist, VIRTIO_ARG_VDPA,
2094 vdpa_check_handler, vdpa);
2096 PMD_INIT_LOG(ERR, "Failed to parse %s",
2101 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) {
2102 ret = rte_kvargs_process(kvlist,
2104 link_speed_handler, speed);
2106 PMD_INIT_LOG(ERR, "Failed to parse %s",
2113 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) {
2114 ret = rte_kvargs_process(kvlist,
2115 VIRTIO_ARG_VECTORIZED,
2116 vectorized_check_handler, vectorized);
2118 PMD_INIT_LOG(ERR, "Failed to parse %s",
2119 VIRTIO_ARG_VECTORIZED);
2125 rte_kvargs_free(kvlist);
2129 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
2130 struct rte_pci_device *pci_dev)
2135 ret = virtio_dev_devargs_parse(pci_dev->device.devargs, &vdpa, NULL,
2138 PMD_INIT_LOG(ERR, "devargs parsing is failed");
2141 /* virtio pmd skips probe if device needs to work in vdpa mode */
2145 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
2146 eth_virtio_dev_init);
2149 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
2153 ret = rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
2154 /* Port has already been released by close. */
2160 static struct rte_pci_driver rte_virtio_pmd = {
2162 .name = "net_virtio",
2164 .id_table = pci_id_virtio_map,
2166 .probe = eth_virtio_pci_probe,
2167 .remove = eth_virtio_pci_remove,
2170 RTE_INIT(rte_virtio_pmd_init)
2172 rte_eal_iopl_init();
2173 rte_pci_register(&rte_virtio_pmd);
2177 rx_offload_enabled(struct virtio_hw *hw)
2179 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
2180 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2181 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
2185 tx_offload_enabled(struct virtio_hw *hw)
2187 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
2188 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
2189 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
2193 * Configure virtio device
2194 * It returns 0 on success.
2197 virtio_dev_configure(struct rte_eth_dev *dev)
2199 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2200 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
2201 struct virtio_hw *hw = dev->data->dev_private;
2202 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
2204 uint64_t rx_offloads = rxmode->offloads;
2205 uint64_t tx_offloads = txmode->offloads;
2206 uint64_t req_features;
2209 PMD_INIT_LOG(DEBUG, "configure");
2210 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
2212 if (rxmode->mq_mode != ETH_MQ_RX_NONE) {
2214 "Unsupported Rx multi queue mode %d",
2219 if (txmode->mq_mode != ETH_MQ_TX_NONE) {
2221 "Unsupported Tx multi queue mode %d",
2226 if (dev->data->dev_conf.intr_conf.rxq) {
2227 ret = virtio_init_device(dev, hw->req_guest_features);
2232 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
2233 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
2235 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2236 DEV_RX_OFFLOAD_TCP_CKSUM))
2237 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2239 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2241 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2242 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2244 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2245 DEV_TX_OFFLOAD_TCP_CKSUM))
2246 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2248 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2250 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2251 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2253 /* if request features changed, reinit the device */
2254 if (req_features != hw->req_guest_features) {
2255 ret = virtio_init_device(dev, req_features);
2260 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2261 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2262 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2264 "rx checksum not available on this host");
2268 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2269 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2270 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2272 "Large Receive Offload not available on this host");
2276 /* start control queue */
2277 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2278 virtio_dev_cq_start(dev);
2280 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2283 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
2284 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2286 "vlan filtering not available on this host");
2290 hw->has_tx_offload = tx_offload_enabled(hw);
2291 hw->has_rx_offload = rx_offload_enabled(hw);
2293 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2294 /* Enable vector (0) for Link State Intrerrupt */
2295 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
2296 VIRTIO_MSI_NO_VECTOR) {
2297 PMD_DRV_LOG(ERR, "failed to set config vector");
2301 if (vtpci_packed_queue(hw)) {
2302 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT)
2303 if ((hw->use_vec_rx || hw->use_vec_tx) &&
2304 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) ||
2305 !vtpci_with_feature(hw, VIRTIO_F_IN_ORDER) ||
2306 !vtpci_with_feature(hw, VIRTIO_F_VERSION_1))) {
2308 "disabled packed ring vectorized path for requirements not met");
2317 if (hw->use_vec_rx) {
2318 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2320 "disabled packed ring vectorized rx for mrg_rxbuf enabled");
2324 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) {
2326 "disabled packed ring vectorized rx for TCP_LRO enabled");
2331 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2332 hw->use_inorder_tx = 1;
2333 hw->use_inorder_rx = 1;
2337 if (hw->use_vec_rx) {
2338 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
2339 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2341 "disabled split ring vectorized path for requirement not met");
2345 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2347 "disabled split ring vectorized rx for mrg_rxbuf enabled");
2351 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2352 DEV_RX_OFFLOAD_TCP_CKSUM |
2353 DEV_RX_OFFLOAD_TCP_LRO |
2354 DEV_RX_OFFLOAD_VLAN_STRIP)) {
2356 "disabled split ring vectorized rx for offloading enabled");
2367 virtio_dev_start(struct rte_eth_dev *dev)
2369 uint16_t nb_queues, i;
2370 struct virtnet_rx *rxvq;
2371 struct virtnet_tx *txvq __rte_unused;
2372 struct virtio_hw *hw = dev->data->dev_private;
2375 /* Finish the initialization of the queues */
2376 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2377 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2381 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2382 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2387 /* check if lsc interrupt feature is enabled */
2388 if (dev->data->dev_conf.intr_conf.lsc) {
2389 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2390 PMD_DRV_LOG(ERR, "link status not supported by host");
2395 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2396 * in device configure, but it could be unmapped when device is
2399 if (dev->data->dev_conf.intr_conf.lsc ||
2400 dev->data->dev_conf.intr_conf.rxq) {
2401 virtio_intr_disable(dev);
2403 /* Setup interrupt callback */
2404 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2405 rte_intr_callback_register(dev->intr_handle,
2406 virtio_interrupt_handler,
2409 if (virtio_intr_enable(dev) < 0) {
2410 PMD_DRV_LOG(ERR, "interrupt enable failed");
2415 /*Notify the backend
2416 *Otherwise the tap backend might already stop its queue due to fullness.
2417 *vhost backend will have no chance to be waked up
2419 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2420 if (hw->max_queue_pairs > 1) {
2421 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2425 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2427 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2428 rxvq = dev->data->rx_queues[i];
2429 /* Flush the old packets */
2430 virtqueue_rxvq_flush(rxvq->vq);
2431 virtqueue_notify(rxvq->vq);
2434 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2435 txvq = dev->data->tx_queues[i];
2436 virtqueue_notify(txvq->vq);
2439 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2441 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2442 rxvq = dev->data->rx_queues[i];
2443 VIRTQUEUE_DUMP(rxvq->vq);
2446 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2447 txvq = dev->data->tx_queues[i];
2448 VIRTQUEUE_DUMP(txvq->vq);
2451 set_rxtx_funcs(dev);
2454 /* Initialize Link state */
2455 virtio_dev_link_update(dev, 0);
2460 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2462 struct virtio_hw *hw = dev->data->dev_private;
2463 uint16_t nr_vq = virtio_get_nr_vq(hw);
2464 const char *type __rte_unused;
2465 unsigned int i, mbuf_num = 0;
2466 struct virtqueue *vq;
2467 struct rte_mbuf *buf;
2470 if (hw->vqs == NULL)
2473 for (i = 0; i < nr_vq; i++) {
2478 queue_type = virtio_get_queue_type(hw, i);
2479 if (queue_type == VTNET_RQ)
2481 else if (queue_type == VTNET_TQ)
2487 "Before freeing %s[%d] used and unused buf",
2491 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2492 rte_pktmbuf_free(buf);
2497 "After freeing %s[%d] used and unused buf",
2502 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2506 * Stop device: disable interrupt and mark link down
2509 virtio_dev_stop(struct rte_eth_dev *dev)
2511 struct virtio_hw *hw = dev->data->dev_private;
2512 struct rte_eth_link link;
2513 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2515 PMD_INIT_LOG(DEBUG, "stop");
2517 rte_spinlock_lock(&hw->state_lock);
2520 hw->started = false;
2522 if (intr_conf->lsc || intr_conf->rxq) {
2523 virtio_intr_disable(dev);
2525 /* Reset interrupt callback */
2526 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2527 rte_intr_callback_unregister(dev->intr_handle,
2528 virtio_interrupt_handler,
2533 memset(&link, 0, sizeof(link));
2534 rte_eth_linkstatus_set(dev, &link);
2536 rte_spinlock_unlock(&hw->state_lock);
2540 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2542 struct rte_eth_link link;
2544 struct virtio_hw *hw = dev->data->dev_private;
2546 memset(&link, 0, sizeof(link));
2547 link.link_duplex = hw->duplex;
2548 link.link_speed = hw->speed;
2549 link.link_autoneg = ETH_LINK_AUTONEG;
2552 link.link_status = ETH_LINK_DOWN;
2553 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2554 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2555 vtpci_read_dev_config(hw,
2556 offsetof(struct virtio_net_config, status),
2557 &status, sizeof(status));
2558 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2559 link.link_status = ETH_LINK_DOWN;
2560 PMD_INIT_LOG(DEBUG, "Port %d is down",
2561 dev->data->port_id);
2563 link.link_status = ETH_LINK_UP;
2564 PMD_INIT_LOG(DEBUG, "Port %d is up",
2565 dev->data->port_id);
2568 link.link_status = ETH_LINK_UP;
2571 return rte_eth_linkstatus_set(dev, &link);
2575 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2577 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2578 struct virtio_hw *hw = dev->data->dev_private;
2579 uint64_t offloads = rxmode->offloads;
2581 if (mask & ETH_VLAN_FILTER_MASK) {
2582 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2583 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2586 "vlan filtering not available on this host");
2592 if (mask & ETH_VLAN_STRIP_MASK)
2593 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2599 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2601 uint64_t tso_mask, host_features;
2602 struct virtio_hw *hw = dev->data->dev_private;
2603 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed);
2605 dev_info->max_rx_queues =
2606 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2607 dev_info->max_tx_queues =
2608 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2609 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2610 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2611 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2613 host_features = VTPCI_OPS(hw)->get_features(hw);
2614 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2615 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2616 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2617 dev_info->rx_offload_capa |=
2618 DEV_RX_OFFLOAD_TCP_CKSUM |
2619 DEV_RX_OFFLOAD_UDP_CKSUM;
2621 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2622 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2623 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2624 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2625 if ((host_features & tso_mask) == tso_mask)
2626 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2628 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2629 DEV_TX_OFFLOAD_VLAN_INSERT;
2630 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2631 dev_info->tx_offload_capa |=
2632 DEV_TX_OFFLOAD_UDP_CKSUM |
2633 DEV_TX_OFFLOAD_TCP_CKSUM;
2635 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2636 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2637 if ((host_features & tso_mask) == tso_mask)
2638 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2644 * It enables testpmd to collect per queue stats.
2647 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2648 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2649 __rte_unused uint8_t is_rx)
2654 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2655 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2656 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2657 RTE_LOG_REGISTER(virtio_logtype_init, pmd.net.virtio.init, NOTICE);
2658 RTE_LOG_REGISTER(virtio_logtype_driver, pmd.net.virtio.driver, NOTICE);