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 void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
45 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
46 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
47 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
48 static int virtio_dev_info_get(struct rte_eth_dev *dev,
49 struct rte_eth_dev_info *dev_info);
50 static int virtio_dev_link_update(struct rte_eth_dev *dev,
51 int wait_to_complete);
52 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
54 static void virtio_set_hwaddr(struct virtio_hw *hw);
55 static void virtio_get_hwaddr(struct virtio_hw *hw);
57 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
58 struct rte_eth_stats *stats);
59 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
60 struct rte_eth_xstat *xstats, unsigned n);
61 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
62 struct rte_eth_xstat_name *xstats_names,
64 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
65 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
66 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
67 uint16_t vlan_id, int on);
68 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
69 struct rte_ether_addr *mac_addr,
70 uint32_t index, uint32_t vmdq);
71 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
72 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
73 struct rte_ether_addr *mac_addr);
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 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
125 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
126 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
127 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
128 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
129 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
130 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
131 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
132 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
133 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
136 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
137 sizeof(rte_virtio_rxq_stat_strings[0]))
138 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
139 sizeof(rte_virtio_txq_stat_strings[0]))
141 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
143 static struct virtio_pmd_ctrl *
144 virtio_send_command_packed(struct virtnet_ctl *cvq,
145 struct virtio_pmd_ctrl *ctrl,
146 int *dlen, int pkt_num)
148 struct virtqueue *vq = cvq->vq;
150 struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
151 struct virtio_pmd_ctrl *result;
158 * Format is enforced in qemu code:
159 * One TX packet for header;
160 * At least one TX packet per argument;
161 * One RX packet for ACK.
163 head = vq->vq_avail_idx;
164 flags = vq->vq_packed.cached_flags;
165 desc[head].addr = cvq->virtio_net_hdr_mem;
166 desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
169 if (++vq->vq_avail_idx >= vq->vq_nentries) {
170 vq->vq_avail_idx -= vq->vq_nentries;
171 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
174 for (k = 0; k < pkt_num; k++) {
175 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
176 + sizeof(struct virtio_net_ctrl_hdr)
177 + sizeof(ctrl->status) + sizeof(uint8_t) * sum;
178 desc[vq->vq_avail_idx].len = dlen[k];
179 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
180 vq->vq_packed.cached_flags;
184 if (++vq->vq_avail_idx >= vq->vq_nentries) {
185 vq->vq_avail_idx -= vq->vq_nentries;
186 vq->vq_packed.cached_flags ^=
187 VRING_PACKED_DESC_F_AVAIL_USED;
191 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
192 + sizeof(struct virtio_net_ctrl_hdr);
193 desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
194 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
195 vq->vq_packed.cached_flags;
198 if (++vq->vq_avail_idx >= vq->vq_nentries) {
199 vq->vq_avail_idx -= vq->vq_nentries;
200 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
203 virtio_wmb(vq->hw->weak_barriers);
204 desc[head].flags = VRING_DESC_F_NEXT | flags;
206 virtio_wmb(vq->hw->weak_barriers);
207 virtqueue_notify(vq);
209 /* wait for used descriptors in virtqueue */
210 while (!desc_is_used(&desc[head], vq))
213 virtio_rmb(vq->hw->weak_barriers);
215 /* now get used descriptors */
216 vq->vq_free_cnt += nb_descs;
217 vq->vq_used_cons_idx += nb_descs;
218 if (vq->vq_used_cons_idx >= vq->vq_nentries) {
219 vq->vq_used_cons_idx -= vq->vq_nentries;
220 vq->vq_packed.used_wrap_counter ^= 1;
223 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n"
224 "vq->vq_avail_idx=%d\n"
225 "vq->vq_used_cons_idx=%d\n"
226 "vq->vq_packed.cached_flags=0x%x\n"
227 "vq->vq_packed.used_wrap_counter=%d\n",
230 vq->vq_used_cons_idx,
231 vq->vq_packed.cached_flags,
232 vq->vq_packed.used_wrap_counter);
234 result = cvq->virtio_net_hdr_mz->addr;
238 static struct virtio_pmd_ctrl *
239 virtio_send_command_split(struct virtnet_ctl *cvq,
240 struct virtio_pmd_ctrl *ctrl,
241 int *dlen, int pkt_num)
243 struct virtio_pmd_ctrl *result;
244 struct virtqueue *vq = cvq->vq;
248 head = vq->vq_desc_head_idx;
251 * Format is enforced in qemu code:
252 * One TX packet for header;
253 * At least one TX packet per argument;
254 * One RX packet for ACK.
256 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
257 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
258 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
260 i = vq->vq_split.ring.desc[head].next;
262 for (k = 0; k < pkt_num; k++) {
263 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
264 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
265 + sizeof(struct virtio_net_ctrl_hdr)
266 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
267 vq->vq_split.ring.desc[i].len = dlen[k];
270 i = vq->vq_split.ring.desc[i].next;
273 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
274 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
275 + sizeof(struct virtio_net_ctrl_hdr);
276 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
279 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
281 vq_update_avail_ring(vq, head);
282 vq_update_avail_idx(vq);
284 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
286 virtqueue_notify(vq);
289 while (VIRTQUEUE_NUSED(vq) == 0) {
294 while (VIRTQUEUE_NUSED(vq)) {
295 uint32_t idx, desc_idx, used_idx;
296 struct vring_used_elem *uep;
298 used_idx = (uint32_t)(vq->vq_used_cons_idx
299 & (vq->vq_nentries - 1));
300 uep = &vq->vq_split.ring.used->ring[used_idx];
301 idx = (uint32_t) uep->id;
304 while (vq->vq_split.ring.desc[desc_idx].flags &
306 desc_idx = vq->vq_split.ring.desc[desc_idx].next;
310 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
311 vq->vq_desc_head_idx = idx;
313 vq->vq_used_cons_idx++;
317 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
318 vq->vq_free_cnt, vq->vq_desc_head_idx);
320 result = cvq->virtio_net_hdr_mz->addr;
325 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
326 int *dlen, int pkt_num)
328 virtio_net_ctrl_ack status = ~0;
329 struct virtio_pmd_ctrl *result;
330 struct virtqueue *vq;
332 ctrl->status = status;
334 if (!cvq || !cvq->vq) {
335 PMD_INIT_LOG(ERR, "Control queue is not supported.");
339 rte_spinlock_lock(&cvq->lock);
342 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
343 "vq->hw->cvq = %p vq = %p",
344 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
346 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
347 rte_spinlock_unlock(&cvq->lock);
351 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
352 sizeof(struct virtio_pmd_ctrl));
354 if (vtpci_packed_queue(vq->hw))
355 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
357 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num);
359 rte_spinlock_unlock(&cvq->lock);
360 return result->status;
364 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
366 struct virtio_hw *hw = dev->data->dev_private;
367 struct virtio_pmd_ctrl ctrl;
371 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
372 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
373 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
375 dlen[0] = sizeof(uint16_t);
377 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
379 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
380 "failed, this is too late now...");
388 virtio_dev_queue_release(void *queue __rte_unused)
394 virtio_get_nr_vq(struct virtio_hw *hw)
396 uint16_t nr_vq = hw->max_queue_pairs * 2;
398 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
405 virtio_init_vring(struct virtqueue *vq)
407 int size = vq->vq_nentries;
408 uint8_t *ring_mem = vq->vq_ring_virt_mem;
410 PMD_INIT_FUNC_TRACE();
412 memset(ring_mem, 0, vq->vq_ring_size);
414 vq->vq_used_cons_idx = 0;
415 vq->vq_desc_head_idx = 0;
416 vq->vq_avail_idx = 0;
417 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
418 vq->vq_free_cnt = vq->vq_nentries;
419 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
420 if (vtpci_packed_queue(vq->hw)) {
421 vring_init_packed(&vq->vq_packed.ring, ring_mem,
422 VIRTIO_PCI_VRING_ALIGN, size);
423 vring_desc_init_packed(vq, size);
425 struct vring *vr = &vq->vq_split.ring;
427 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
428 vring_desc_init_split(vr->desc, size);
431 * Disable device(host) interrupting guest
433 virtqueue_disable_intr(vq);
437 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
439 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
440 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
441 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
442 unsigned int vq_size, size;
443 struct virtio_hw *hw = dev->data->dev_private;
444 struct virtnet_rx *rxvq = NULL;
445 struct virtnet_tx *txvq = NULL;
446 struct virtnet_ctl *cvq = NULL;
447 struct virtqueue *vq;
448 size_t sz_hdr_mz = 0;
449 void *sw_ring = NULL;
450 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
452 int numa_node = dev->device->numa_node;
454 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
455 vtpci_queue_idx, numa_node);
458 * Read the virtqueue size from the Queue Size field
459 * Always power of 2 and if 0 virtqueue does not exist
461 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
462 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
464 PMD_INIT_LOG(ERR, "virtqueue does not exist");
468 if (!rte_is_power_of_2(vq_size)) {
469 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
473 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
474 dev->data->port_id, vtpci_queue_idx);
476 size = RTE_ALIGN_CEIL(sizeof(*vq) +
477 vq_size * sizeof(struct vq_desc_extra),
478 RTE_CACHE_LINE_SIZE);
479 if (queue_type == VTNET_TQ) {
481 * For each xmit packet, allocate a virtio_net_hdr
482 * and indirect ring elements
484 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
485 } else if (queue_type == VTNET_CQ) {
486 /* Allocate a page for control vq command, data and status */
487 sz_hdr_mz = PAGE_SIZE;
490 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
493 PMD_INIT_LOG(ERR, "can not allocate vq");
496 hw->vqs[vtpci_queue_idx] = vq;
499 vq->vq_queue_index = vtpci_queue_idx;
500 vq->vq_nentries = vq_size;
501 if (vtpci_packed_queue(hw)) {
502 vq->vq_packed.used_wrap_counter = 1;
503 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL;
504 vq->vq_packed.event_flags_shadow = 0;
505 if (queue_type == VTNET_RQ)
506 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
510 * Reserve a memzone for vring elements
512 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN);
513 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
514 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
515 size, vq->vq_ring_size);
517 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
518 numa_node, RTE_MEMZONE_IOVA_CONTIG,
519 VIRTIO_PCI_VRING_ALIGN);
521 if (rte_errno == EEXIST)
522 mz = rte_memzone_lookup(vq_name);
529 memset(mz->addr, 0, mz->len);
531 vq->vq_ring_mem = mz->iova;
532 vq->vq_ring_virt_mem = mz->addr;
533 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
535 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
536 (uint64_t)(uintptr_t)mz->addr);
538 virtio_init_vring(vq);
541 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
542 dev->data->port_id, vtpci_queue_idx);
543 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
544 numa_node, RTE_MEMZONE_IOVA_CONTIG,
545 RTE_CACHE_LINE_SIZE);
546 if (hdr_mz == NULL) {
547 if (rte_errno == EEXIST)
548 hdr_mz = rte_memzone_lookup(vq_hdr_name);
549 if (hdr_mz == NULL) {
556 if (queue_type == VTNET_RQ) {
557 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
558 sizeof(vq->sw_ring[0]);
560 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
561 RTE_CACHE_LINE_SIZE, numa_node);
563 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
568 vq->sw_ring = sw_ring;
571 rxvq->port_id = dev->data->port_id;
573 } else if (queue_type == VTNET_TQ) {
576 txvq->port_id = dev->data->port_id;
578 txvq->virtio_net_hdr_mz = hdr_mz;
579 txvq->virtio_net_hdr_mem = hdr_mz->iova;
580 } else if (queue_type == VTNET_CQ) {
584 cvq->virtio_net_hdr_mz = hdr_mz;
585 cvq->virtio_net_hdr_mem = hdr_mz->iova;
586 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
591 /* For virtio_user case (that is when hw->dev is NULL), we use
592 * virtual address. And we need properly set _offset_, please see
593 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
595 if (!hw->virtio_user_dev)
596 vq->offset = offsetof(struct rte_mbuf, buf_iova);
598 vq->vq_ring_mem = (uintptr_t)mz->addr;
599 vq->offset = offsetof(struct rte_mbuf, buf_addr);
600 if (queue_type == VTNET_TQ)
601 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
602 else if (queue_type == VTNET_CQ)
603 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
606 if (queue_type == VTNET_TQ) {
607 struct virtio_tx_region *txr;
611 memset(txr, 0, vq_size * sizeof(*txr));
612 for (i = 0; i < vq_size; i++) {
613 struct vring_desc *start_dp = txr[i].tx_indir;
615 /* first indirect descriptor is always the tx header */
616 if (!vtpci_packed_queue(hw)) {
617 vring_desc_init_split(start_dp,
618 RTE_DIM(txr[i].tx_indir));
619 start_dp->addr = txvq->virtio_net_hdr_mem
621 + offsetof(struct virtio_tx_region,
623 start_dp->len = hw->vtnet_hdr_size;
624 start_dp->flags = VRING_DESC_F_NEXT;
629 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
630 PMD_INIT_LOG(ERR, "setup_queue failed");
638 rte_memzone_free(hdr_mz);
639 rte_memzone_free(mz);
646 virtio_free_queues(struct virtio_hw *hw)
648 uint16_t nr_vq = virtio_get_nr_vq(hw);
649 struct virtqueue *vq;
656 for (i = 0; i < nr_vq; i++) {
661 queue_type = virtio_get_queue_type(hw, i);
662 if (queue_type == VTNET_RQ) {
663 rte_free(vq->sw_ring);
664 rte_memzone_free(vq->rxq.mz);
665 } else if (queue_type == VTNET_TQ) {
666 rte_memzone_free(vq->txq.mz);
667 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
669 rte_memzone_free(vq->cq.mz);
670 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
682 virtio_alloc_queues(struct rte_eth_dev *dev)
684 struct virtio_hw *hw = dev->data->dev_private;
685 uint16_t nr_vq = virtio_get_nr_vq(hw);
689 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
691 PMD_INIT_LOG(ERR, "failed to allocate vqs");
695 for (i = 0; i < nr_vq; i++) {
696 ret = virtio_init_queue(dev, i);
698 virtio_free_queues(hw);
706 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
709 virtio_dev_close(struct rte_eth_dev *dev)
711 struct virtio_hw *hw = dev->data->dev_private;
712 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
714 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
721 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
722 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
724 virtio_queues_unbind_intr(dev);
726 if (intr_conf->lsc || intr_conf->rxq) {
727 virtio_intr_disable(dev);
728 rte_intr_efd_disable(dev->intr_handle);
729 rte_free(dev->intr_handle->intr_vec);
730 dev->intr_handle->intr_vec = NULL;
734 virtio_dev_free_mbufs(dev);
735 virtio_free_queues(hw);
737 #ifdef RTE_VIRTIO_USER
738 if (hw->virtio_user_dev)
739 virtio_user_dev_uninit(hw->virtio_user_dev);
743 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(dev));
745 rte_pci_ioport_unmap(VTPCI_IO(hw));
750 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
752 struct virtio_hw *hw = dev->data->dev_private;
753 struct virtio_pmd_ctrl ctrl;
757 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
758 PMD_INIT_LOG(INFO, "host does not support rx control");
762 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
763 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
767 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
769 PMD_INIT_LOG(ERR, "Failed to enable promisc");
773 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
775 struct virtio_hw *hw = dev->data->dev_private;
776 struct virtio_pmd_ctrl ctrl;
780 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
781 PMD_INIT_LOG(INFO, "host does not support rx control");
785 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
786 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
790 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
792 PMD_INIT_LOG(ERR, "Failed to disable promisc");
796 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
798 struct virtio_hw *hw = dev->data->dev_private;
799 struct virtio_pmd_ctrl ctrl;
803 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
804 PMD_INIT_LOG(INFO, "host does not support rx control");
808 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
809 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
813 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
815 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
819 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
821 struct virtio_hw *hw = dev->data->dev_private;
822 struct virtio_pmd_ctrl ctrl;
826 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
827 PMD_INIT_LOG(INFO, "host does not support rx control");
831 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
832 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
836 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
838 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
841 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
843 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
845 struct virtio_hw *hw = dev->data->dev_private;
846 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
848 uint32_t frame_size = mtu + ether_hdr_len;
849 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
851 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
853 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) {
854 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
855 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
862 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
864 struct virtio_hw *hw = dev->data->dev_private;
865 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
866 struct virtqueue *vq = rxvq->vq;
868 virtqueue_enable_intr(vq);
869 virtio_mb(hw->weak_barriers);
874 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
876 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
877 struct virtqueue *vq = rxvq->vq;
879 virtqueue_disable_intr(vq);
884 * dev_ops for virtio, bare necessities for basic operation
886 static const struct eth_dev_ops virtio_eth_dev_ops = {
887 .dev_configure = virtio_dev_configure,
888 .dev_start = virtio_dev_start,
889 .dev_stop = virtio_dev_stop,
890 .dev_close = virtio_dev_close,
891 .promiscuous_enable = virtio_dev_promiscuous_enable,
892 .promiscuous_disable = virtio_dev_promiscuous_disable,
893 .allmulticast_enable = virtio_dev_allmulticast_enable,
894 .allmulticast_disable = virtio_dev_allmulticast_disable,
895 .mtu_set = virtio_mtu_set,
896 .dev_infos_get = virtio_dev_info_get,
897 .stats_get = virtio_dev_stats_get,
898 .xstats_get = virtio_dev_xstats_get,
899 .xstats_get_names = virtio_dev_xstats_get_names,
900 .stats_reset = virtio_dev_stats_reset,
901 .xstats_reset = virtio_dev_stats_reset,
902 .link_update = virtio_dev_link_update,
903 .vlan_offload_set = virtio_dev_vlan_offload_set,
904 .rx_queue_setup = virtio_dev_rx_queue_setup,
905 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
906 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
907 .rx_queue_release = virtio_dev_queue_release,
908 .rx_descriptor_done = virtio_dev_rx_queue_done,
909 .tx_queue_setup = virtio_dev_tx_queue_setup,
910 .tx_queue_release = virtio_dev_queue_release,
911 /* collect stats per queue */
912 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
913 .vlan_filter_set = virtio_vlan_filter_set,
914 .mac_addr_add = virtio_mac_addr_add,
915 .mac_addr_remove = virtio_mac_addr_remove,
916 .mac_addr_set = virtio_mac_addr_set,
920 * dev_ops for virtio-user in secondary processes, as we just have
921 * some limited supports currently.
923 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
924 .dev_infos_get = virtio_dev_info_get,
925 .stats_get = virtio_dev_stats_get,
926 .xstats_get = virtio_dev_xstats_get,
927 .xstats_get_names = virtio_dev_xstats_get_names,
928 .stats_reset = virtio_dev_stats_reset,
929 .xstats_reset = virtio_dev_stats_reset,
930 /* collect stats per queue */
931 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
935 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
939 for (i = 0; i < dev->data->nb_tx_queues; i++) {
940 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
944 stats->opackets += txvq->stats.packets;
945 stats->obytes += txvq->stats.bytes;
947 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
948 stats->q_opackets[i] = txvq->stats.packets;
949 stats->q_obytes[i] = txvq->stats.bytes;
953 for (i = 0; i < dev->data->nb_rx_queues; i++) {
954 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
958 stats->ipackets += rxvq->stats.packets;
959 stats->ibytes += rxvq->stats.bytes;
960 stats->ierrors += rxvq->stats.errors;
962 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
963 stats->q_ipackets[i] = rxvq->stats.packets;
964 stats->q_ibytes[i] = rxvq->stats.bytes;
968 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
971 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
972 struct rte_eth_xstat_name *xstats_names,
973 __rte_unused unsigned limit)
979 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
980 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
982 if (xstats_names != NULL) {
983 /* Note: limit checked in rte_eth_xstats_names() */
985 for (i = 0; i < dev->data->nb_rx_queues; i++) {
986 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
989 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
990 snprintf(xstats_names[count].name,
991 sizeof(xstats_names[count].name),
993 rte_virtio_rxq_stat_strings[t].name);
998 for (i = 0; i < dev->data->nb_tx_queues; i++) {
999 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1002 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1003 snprintf(xstats_names[count].name,
1004 sizeof(xstats_names[count].name),
1006 rte_virtio_txq_stat_strings[t].name);
1016 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
1022 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
1023 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1028 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1029 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1036 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1037 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1038 rte_virtio_rxq_stat_strings[t].offset);
1039 xstats[count].id = count;
1044 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1045 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1052 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1053 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1054 rte_virtio_txq_stat_strings[t].offset);
1055 xstats[count].id = count;
1064 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1066 virtio_update_stats(dev, stats);
1072 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1076 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1077 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1081 txvq->stats.packets = 0;
1082 txvq->stats.bytes = 0;
1083 txvq->stats.multicast = 0;
1084 txvq->stats.broadcast = 0;
1085 memset(txvq->stats.size_bins, 0,
1086 sizeof(txvq->stats.size_bins[0]) * 8);
1089 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1090 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1094 rxvq->stats.packets = 0;
1095 rxvq->stats.bytes = 0;
1096 rxvq->stats.errors = 0;
1097 rxvq->stats.multicast = 0;
1098 rxvq->stats.broadcast = 0;
1099 memset(rxvq->stats.size_bins, 0,
1100 sizeof(rxvq->stats.size_bins[0]) * 8);
1105 virtio_set_hwaddr(struct virtio_hw *hw)
1107 vtpci_write_dev_config(hw,
1108 offsetof(struct virtio_net_config, mac),
1109 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1113 virtio_get_hwaddr(struct virtio_hw *hw)
1115 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1116 vtpci_read_dev_config(hw,
1117 offsetof(struct virtio_net_config, mac),
1118 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1120 rte_eth_random_addr(&hw->mac_addr[0]);
1121 virtio_set_hwaddr(hw);
1126 virtio_mac_table_set(struct virtio_hw *hw,
1127 const struct virtio_net_ctrl_mac *uc,
1128 const struct virtio_net_ctrl_mac *mc)
1130 struct virtio_pmd_ctrl ctrl;
1133 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1134 PMD_DRV_LOG(INFO, "host does not support mac table");
1138 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1139 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1141 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries);
1142 memcpy(ctrl.data, uc, len[0]);
1144 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries);
1145 memcpy(ctrl.data + len[0], mc, len[1]);
1147 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1149 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1154 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr,
1155 uint32_t index, uint32_t vmdq __rte_unused)
1157 struct virtio_hw *hw = dev->data->dev_private;
1158 const struct rte_ether_addr *addrs = dev->data->mac_addrs;
1160 struct virtio_net_ctrl_mac *uc, *mc;
1162 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1163 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1167 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1168 sizeof(uc->entries));
1170 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1171 sizeof(mc->entries));
1174 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1175 const struct rte_ether_addr *addr
1176 = (i == index) ? mac_addr : addrs + i;
1177 struct virtio_net_ctrl_mac *tbl
1178 = rte_is_multicast_ether_addr(addr) ? mc : uc;
1180 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN);
1183 return virtio_mac_table_set(hw, uc, mc);
1187 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1189 struct virtio_hw *hw = dev->data->dev_private;
1190 struct rte_ether_addr *addrs = dev->data->mac_addrs;
1191 struct virtio_net_ctrl_mac *uc, *mc;
1194 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1195 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1199 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1200 sizeof(uc->entries));
1202 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1203 sizeof(mc->entries));
1206 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1207 struct virtio_net_ctrl_mac *tbl;
1209 if (i == index || rte_is_zero_ether_addr(addrs + i))
1212 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc;
1213 memcpy(&tbl->macs[tbl->entries++], addrs + i,
1214 RTE_ETHER_ADDR_LEN);
1217 virtio_mac_table_set(hw, uc, mc);
1221 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
1223 struct virtio_hw *hw = dev->data->dev_private;
1225 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN);
1227 /* Use atomic update if available */
1228 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1229 struct virtio_pmd_ctrl ctrl;
1230 int len = RTE_ETHER_ADDR_LEN;
1232 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1233 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1235 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN);
1236 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1239 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1242 virtio_set_hwaddr(hw);
1247 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1249 struct virtio_hw *hw = dev->data->dev_private;
1250 struct virtio_pmd_ctrl ctrl;
1253 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1256 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1257 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1258 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1259 len = sizeof(vlan_id);
1261 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1265 virtio_intr_unmask(struct rte_eth_dev *dev)
1267 struct virtio_hw *hw = dev->data->dev_private;
1269 if (rte_intr_ack(dev->intr_handle) < 0)
1272 if (!hw->virtio_user_dev)
1273 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1279 virtio_intr_enable(struct rte_eth_dev *dev)
1281 struct virtio_hw *hw = dev->data->dev_private;
1283 if (rte_intr_enable(dev->intr_handle) < 0)
1286 if (!hw->virtio_user_dev)
1287 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1293 virtio_intr_disable(struct rte_eth_dev *dev)
1295 struct virtio_hw *hw = dev->data->dev_private;
1297 if (rte_intr_disable(dev->intr_handle) < 0)
1300 if (!hw->virtio_user_dev)
1301 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1307 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1309 uint64_t host_features;
1311 /* Prepare guest_features: feature that driver wants to support */
1312 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1315 /* Read device(host) feature bits */
1316 host_features = VTPCI_OPS(hw)->get_features(hw);
1317 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1320 /* If supported, ensure MTU value is valid before acknowledging it. */
1321 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1322 struct virtio_net_config config;
1324 vtpci_read_dev_config(hw,
1325 offsetof(struct virtio_net_config, mtu),
1326 &config.mtu, sizeof(config.mtu));
1328 if (config.mtu < RTE_ETHER_MIN_MTU)
1329 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1333 * Negotiate features: Subset of device feature bits are written back
1334 * guest feature bits.
1336 hw->guest_features = req_features;
1337 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1338 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1339 hw->guest_features);
1342 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1344 "VIRTIO_F_VERSION_1 features is not enabled.");
1347 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1348 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1350 "failed to set FEATURES_OK status!");
1355 hw->req_guest_features = req_features;
1361 virtio_dev_pause(struct rte_eth_dev *dev)
1363 struct virtio_hw *hw = dev->data->dev_private;
1365 rte_spinlock_lock(&hw->state_lock);
1367 if (hw->started == 0) {
1368 /* Device is just stopped. */
1369 rte_spinlock_unlock(&hw->state_lock);
1374 * Prevent the worker threads from touching queues to avoid contention,
1375 * 1 ms should be enough for the ongoing Tx function to finish.
1382 * Recover hw state to let the worker threads continue.
1385 virtio_dev_resume(struct rte_eth_dev *dev)
1387 struct virtio_hw *hw = dev->data->dev_private;
1390 rte_spinlock_unlock(&hw->state_lock);
1394 * Should be called only after device is paused.
1397 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1400 struct virtio_hw *hw = dev->data->dev_private;
1401 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1404 hw->inject_pkts = tx_pkts;
1405 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1406 hw->inject_pkts = NULL;
1412 virtio_notify_peers(struct rte_eth_dev *dev)
1414 struct virtio_hw *hw = dev->data->dev_private;
1415 struct virtnet_rx *rxvq;
1416 struct rte_mbuf *rarp_mbuf;
1418 if (!dev->data->rx_queues)
1421 rxvq = dev->data->rx_queues[0];
1425 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1426 (struct rte_ether_addr *)hw->mac_addr);
1427 if (rarp_mbuf == NULL) {
1428 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1432 /* If virtio port just stopped, no need to send RARP */
1433 if (virtio_dev_pause(dev) < 0) {
1434 rte_pktmbuf_free(rarp_mbuf);
1438 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1439 virtio_dev_resume(dev);
1443 virtio_ack_link_announce(struct rte_eth_dev *dev)
1445 struct virtio_hw *hw = dev->data->dev_private;
1446 struct virtio_pmd_ctrl ctrl;
1448 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1449 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1451 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1455 * Process virtio config changed interrupt. Call the callback
1456 * if link state changed, generate gratuitous RARP packet if
1457 * the status indicates an ANNOUNCE.
1460 virtio_interrupt_handler(void *param)
1462 struct rte_eth_dev *dev = param;
1463 struct virtio_hw *hw = dev->data->dev_private;
1467 /* Read interrupt status which clears interrupt */
1468 isr = vtpci_isr(hw);
1469 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1471 if (virtio_intr_unmask(dev) < 0)
1472 PMD_DRV_LOG(ERR, "interrupt enable failed");
1474 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1475 if (virtio_dev_link_update(dev, 0) == 0)
1476 _rte_eth_dev_callback_process(dev,
1477 RTE_ETH_EVENT_INTR_LSC,
1480 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1481 vtpci_read_dev_config(hw,
1482 offsetof(struct virtio_net_config, status),
1483 &status, sizeof(status));
1484 if (status & VIRTIO_NET_S_ANNOUNCE) {
1485 virtio_notify_peers(dev);
1487 virtio_ack_link_announce(dev);
1493 /* set rx and tx handlers according to what is supported */
1495 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1497 struct virtio_hw *hw = eth_dev->data->dev_private;
1499 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare;
1500 if (vtpci_packed_queue(hw)) {
1502 "virtio: using packed ring %s Tx path on port %u",
1503 hw->use_inorder_tx ? "inorder" : "standard",
1504 eth_dev->data->port_id);
1505 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1507 if (hw->use_inorder_tx) {
1508 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1509 eth_dev->data->port_id);
1510 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1512 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1513 eth_dev->data->port_id);
1514 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1518 if (vtpci_packed_queue(hw)) {
1519 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1521 "virtio: using packed ring mergeable buffer Rx path on port %u",
1522 eth_dev->data->port_id);
1523 eth_dev->rx_pkt_burst =
1524 &virtio_recv_mergeable_pkts_packed;
1527 "virtio: using packed ring standard Rx path on port %u",
1528 eth_dev->data->port_id);
1529 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1532 if (hw->use_simple_rx) {
1533 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1534 eth_dev->data->port_id);
1535 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1536 } else if (hw->use_inorder_rx) {
1538 "virtio: using inorder Rx path on port %u",
1539 eth_dev->data->port_id);
1540 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1541 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1543 "virtio: using mergeable buffer Rx path on port %u",
1544 eth_dev->data->port_id);
1545 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1547 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1548 eth_dev->data->port_id);
1549 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1555 /* Only support 1:1 queue/interrupt mapping so far.
1556 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1557 * interrupt vectors (<N+1).
1560 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1563 struct virtio_hw *hw = dev->data->dev_private;
1565 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1566 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1567 dev->intr_handle->intr_vec[i] = i + 1;
1568 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1569 VIRTIO_MSI_NO_VECTOR) {
1570 PMD_DRV_LOG(ERR, "failed to set queue vector");
1579 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1582 struct virtio_hw *hw = dev->data->dev_private;
1584 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1585 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1586 VTPCI_OPS(hw)->set_queue_irq(hw,
1587 hw->vqs[i * VTNET_CQ],
1588 VIRTIO_MSI_NO_VECTOR);
1592 virtio_configure_intr(struct rte_eth_dev *dev)
1594 struct virtio_hw *hw = dev->data->dev_private;
1596 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1597 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1601 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1602 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1606 if (!dev->intr_handle->intr_vec) {
1607 dev->intr_handle->intr_vec =
1608 rte_zmalloc("intr_vec",
1609 hw->max_queue_pairs * sizeof(int), 0);
1610 if (!dev->intr_handle->intr_vec) {
1611 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1612 hw->max_queue_pairs);
1617 /* Re-register callback to update max_intr */
1618 rte_intr_callback_unregister(dev->intr_handle,
1619 virtio_interrupt_handler,
1621 rte_intr_callback_register(dev->intr_handle,
1622 virtio_interrupt_handler,
1625 /* DO NOT try to remove this! This function will enable msix, or QEMU
1626 * will encounter SIGSEGV when DRIVER_OK is sent.
1627 * And for legacy devices, this should be done before queue/vec binding
1628 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1629 * (22) will be ignored.
1631 if (virtio_intr_enable(dev) < 0) {
1632 PMD_DRV_LOG(ERR, "interrupt enable failed");
1636 if (virtio_queues_bind_intr(dev) < 0) {
1637 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1644 /* reset device and renegotiate features if needed */
1646 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1648 struct virtio_hw *hw = eth_dev->data->dev_private;
1649 struct virtio_net_config *config;
1650 struct virtio_net_config local_config;
1651 struct rte_pci_device *pci_dev = NULL;
1654 /* Reset the device although not necessary at startup */
1658 virtio_dev_free_mbufs(eth_dev);
1659 virtio_free_queues(hw);
1662 /* Tell the host we've noticed this device. */
1663 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1665 /* Tell the host we've known how to drive the device. */
1666 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1667 if (virtio_negotiate_features(hw, req_features) < 0)
1670 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1672 if (!hw->virtio_user_dev)
1673 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1675 /* If host does not support both status and MSI-X then disable LSC */
1676 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1677 hw->use_msix != VIRTIO_MSIX_NONE)
1678 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1680 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1682 /* Setting up rx_header size for the device */
1683 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1684 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) ||
1685 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED))
1686 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1688 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1690 /* Copy the permanent MAC address to: virtio_hw */
1691 virtio_get_hwaddr(hw);
1692 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr,
1693 ð_dev->data->mac_addrs[0]);
1695 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1696 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1697 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1699 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1700 config = &local_config;
1702 vtpci_read_dev_config(hw,
1703 offsetof(struct virtio_net_config, mac),
1704 &config->mac, sizeof(config->mac));
1706 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1707 vtpci_read_dev_config(hw,
1708 offsetof(struct virtio_net_config, status),
1709 &config->status, sizeof(config->status));
1712 "VIRTIO_NET_F_STATUS is not supported");
1716 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1717 vtpci_read_dev_config(hw,
1718 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1719 &config->max_virtqueue_pairs,
1720 sizeof(config->max_virtqueue_pairs));
1723 "VIRTIO_NET_F_MQ is not supported");
1724 config->max_virtqueue_pairs = 1;
1727 hw->max_queue_pairs = config->max_virtqueue_pairs;
1729 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1730 vtpci_read_dev_config(hw,
1731 offsetof(struct virtio_net_config, mtu),
1733 sizeof(config->mtu));
1736 * MTU value has already been checked at negotiation
1737 * time, but check again in case it has changed since
1738 * then, which should not happen.
1740 if (config->mtu < RTE_ETHER_MIN_MTU) {
1741 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1746 hw->max_mtu = config->mtu;
1747 /* Set initial MTU to maximum one supported by vhost */
1748 eth_dev->data->mtu = config->mtu;
1751 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1752 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1755 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1756 config->max_virtqueue_pairs);
1757 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1759 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1760 config->mac[0], config->mac[1],
1761 config->mac[2], config->mac[3],
1762 config->mac[4], config->mac[5]);
1764 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1765 hw->max_queue_pairs = 1;
1766 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1767 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1770 ret = virtio_alloc_queues(eth_dev);
1774 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1775 if (virtio_configure_intr(eth_dev) < 0) {
1776 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1777 virtio_free_queues(hw);
1782 vtpci_reinit_complete(hw);
1785 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1786 eth_dev->data->port_id, pci_dev->id.vendor_id,
1787 pci_dev->id.device_id);
1793 * Remap the PCI device again (IO port map for legacy device and
1794 * memory map for modern device), so that the secondary process
1795 * could have the PCI initiated correctly.
1798 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1802 * We don't have to re-parse the PCI config space, since
1803 * rte_pci_map_device() makes sure the mapped address
1804 * in secondary process would equal to the one mapped in
1805 * the primary process: error will be returned if that
1806 * requirement is not met.
1808 * That said, we could simply reuse all cap pointers
1809 * (such as dev_cfg, common_cfg, etc.) parsed from the
1810 * primary process, which is stored in shared memory.
1812 if (rte_pci_map_device(pci_dev)) {
1813 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1817 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1825 virtio_set_vtpci_ops(struct virtio_hw *hw)
1827 #ifdef RTE_VIRTIO_USER
1828 if (hw->virtio_user_dev)
1829 VTPCI_OPS(hw) = &virtio_user_ops;
1833 VTPCI_OPS(hw) = &modern_ops;
1835 VTPCI_OPS(hw) = &legacy_ops;
1839 * This function is based on probe() function in virtio_pci.c
1840 * It returns 0 on success.
1843 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1845 struct virtio_hw *hw = eth_dev->data->dev_private;
1848 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) {
1850 "Not sufficient headroom required = %d, avail = %d",
1851 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf),
1852 RTE_PKTMBUF_HEADROOM);
1857 eth_dev->dev_ops = &virtio_eth_dev_ops;
1859 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1860 if (!hw->virtio_user_dev) {
1861 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1866 virtio_set_vtpci_ops(hw);
1867 set_rxtx_funcs(eth_dev);
1873 * Pass the information to the rte_eth_dev_close() that it should also
1874 * release the private port resources.
1876 eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
1878 /* Allocate memory for storing MAC addresses */
1879 eth_dev->data->mac_addrs = rte_zmalloc("virtio",
1880 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0);
1881 if (eth_dev->data->mac_addrs == NULL) {
1883 "Failed to allocate %d bytes needed to store MAC addresses",
1884 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN);
1888 hw->port_id = eth_dev->data->port_id;
1889 /* For virtio_user case the hw->virtio_user_dev is populated by
1890 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1892 if (!hw->virtio_user_dev) {
1893 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1895 goto err_vtpci_init;
1898 /* reset device and negotiate default features */
1899 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1901 goto err_virtio_init;
1908 if (!hw->virtio_user_dev) {
1909 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1911 rte_pci_ioport_unmap(VTPCI_IO(hw));
1914 rte_free(eth_dev->data->mac_addrs);
1915 eth_dev->data->mac_addrs = NULL;
1920 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1922 PMD_INIT_FUNC_TRACE();
1924 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1927 virtio_dev_stop(eth_dev);
1928 virtio_dev_close(eth_dev);
1930 eth_dev->dev_ops = NULL;
1931 eth_dev->tx_pkt_burst = NULL;
1932 eth_dev->rx_pkt_burst = NULL;
1934 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1939 static int vdpa_check_handler(__rte_unused const char *key,
1940 const char *value, __rte_unused void *opaque)
1942 if (strcmp(value, "1"))
1949 vdpa_mode_selected(struct rte_devargs *devargs)
1951 struct rte_kvargs *kvlist;
1952 const char *key = "vdpa";
1955 if (devargs == NULL)
1958 kvlist = rte_kvargs_parse(devargs->args, NULL);
1962 if (!rte_kvargs_count(kvlist, key))
1965 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1966 if (rte_kvargs_process(kvlist, key,
1967 vdpa_check_handler, NULL) < 0) {
1973 rte_kvargs_free(kvlist);
1977 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1978 struct rte_pci_device *pci_dev)
1980 if (rte_eal_iopl_init() != 0) {
1981 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1985 /* virtio pmd skips probe if device needs to work in vdpa mode */
1986 if (vdpa_mode_selected(pci_dev->device.devargs))
1989 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1990 eth_virtio_dev_init);
1993 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1997 ret = rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1998 /* Port has already been released by close. */
2004 static struct rte_pci_driver rte_virtio_pmd = {
2006 .name = "net_virtio",
2008 .id_table = pci_id_virtio_map,
2010 .probe = eth_virtio_pci_probe,
2011 .remove = eth_virtio_pci_remove,
2014 RTE_INIT(rte_virtio_pmd_init)
2016 rte_eal_iopl_init();
2017 rte_pci_register(&rte_virtio_pmd);
2021 rx_offload_enabled(struct virtio_hw *hw)
2023 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
2024 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2025 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
2029 tx_offload_enabled(struct virtio_hw *hw)
2031 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
2032 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
2033 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
2037 * Configure virtio device
2038 * It returns 0 on success.
2041 virtio_dev_configure(struct rte_eth_dev *dev)
2043 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2044 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
2045 struct virtio_hw *hw = dev->data->dev_private;
2046 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
2048 uint64_t rx_offloads = rxmode->offloads;
2049 uint64_t tx_offloads = txmode->offloads;
2050 uint64_t req_features;
2053 PMD_INIT_LOG(DEBUG, "configure");
2054 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
2056 if (dev->data->dev_conf.intr_conf.rxq) {
2057 ret = virtio_init_device(dev, hw->req_guest_features);
2062 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
2063 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
2065 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2066 DEV_RX_OFFLOAD_TCP_CKSUM))
2067 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2069 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2071 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2072 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2074 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2075 DEV_TX_OFFLOAD_TCP_CKSUM))
2076 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2078 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2080 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2081 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2083 /* if request features changed, reinit the device */
2084 if (req_features != hw->req_guest_features) {
2085 ret = virtio_init_device(dev, req_features);
2090 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2091 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2092 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2094 "rx checksum not available on this host");
2098 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2099 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2100 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2102 "Large Receive Offload not available on this host");
2106 /* start control queue */
2107 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2108 virtio_dev_cq_start(dev);
2110 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2113 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
2114 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2116 "vlan filtering not available on this host");
2120 hw->has_tx_offload = tx_offload_enabled(hw);
2121 hw->has_rx_offload = rx_offload_enabled(hw);
2123 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2124 /* Enable vector (0) for Link State Intrerrupt */
2125 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
2126 VIRTIO_MSI_NO_VECTOR) {
2127 PMD_DRV_LOG(ERR, "failed to set config vector");
2131 rte_spinlock_init(&hw->state_lock);
2133 hw->use_simple_rx = 1;
2135 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2136 hw->use_inorder_tx = 1;
2137 hw->use_inorder_rx = 1;
2138 hw->use_simple_rx = 0;
2141 if (vtpci_packed_queue(hw)) {
2142 hw->use_simple_rx = 0;
2143 hw->use_inorder_rx = 0;
2146 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
2147 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2148 hw->use_simple_rx = 0;
2151 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2152 hw->use_simple_rx = 0;
2155 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2156 DEV_RX_OFFLOAD_TCP_CKSUM |
2157 DEV_RX_OFFLOAD_TCP_LRO |
2158 DEV_RX_OFFLOAD_VLAN_STRIP))
2159 hw->use_simple_rx = 0;
2166 virtio_dev_start(struct rte_eth_dev *dev)
2168 uint16_t nb_queues, i;
2169 struct virtnet_rx *rxvq;
2170 struct virtnet_tx *txvq __rte_unused;
2171 struct virtio_hw *hw = dev->data->dev_private;
2174 /* Finish the initialization of the queues */
2175 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2176 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2180 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2181 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2186 /* check if lsc interrupt feature is enabled */
2187 if (dev->data->dev_conf.intr_conf.lsc) {
2188 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2189 PMD_DRV_LOG(ERR, "link status not supported by host");
2194 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2195 * in device configure, but it could be unmapped when device is
2198 if (dev->data->dev_conf.intr_conf.lsc ||
2199 dev->data->dev_conf.intr_conf.rxq) {
2200 virtio_intr_disable(dev);
2202 /* Setup interrupt callback */
2203 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2204 rte_intr_callback_register(dev->intr_handle,
2205 virtio_interrupt_handler,
2208 if (virtio_intr_enable(dev) < 0) {
2209 PMD_DRV_LOG(ERR, "interrupt enable failed");
2214 /*Notify the backend
2215 *Otherwise the tap backend might already stop its queue due to fullness.
2216 *vhost backend will have no chance to be waked up
2218 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2219 if (hw->max_queue_pairs > 1) {
2220 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2224 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2226 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2227 rxvq = dev->data->rx_queues[i];
2228 /* Flush the old packets */
2229 virtqueue_rxvq_flush(rxvq->vq);
2230 virtqueue_notify(rxvq->vq);
2233 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2234 txvq = dev->data->tx_queues[i];
2235 virtqueue_notify(txvq->vq);
2238 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2240 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2241 rxvq = dev->data->rx_queues[i];
2242 VIRTQUEUE_DUMP(rxvq->vq);
2245 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2246 txvq = dev->data->tx_queues[i];
2247 VIRTQUEUE_DUMP(txvq->vq);
2250 set_rxtx_funcs(dev);
2253 /* Initialize Link state */
2254 virtio_dev_link_update(dev, 0);
2259 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2261 struct virtio_hw *hw = dev->data->dev_private;
2262 uint16_t nr_vq = virtio_get_nr_vq(hw);
2263 const char *type __rte_unused;
2264 unsigned int i, mbuf_num = 0;
2265 struct virtqueue *vq;
2266 struct rte_mbuf *buf;
2269 if (hw->vqs == NULL)
2272 for (i = 0; i < nr_vq; i++) {
2277 queue_type = virtio_get_queue_type(hw, i);
2278 if (queue_type == VTNET_RQ)
2280 else if (queue_type == VTNET_TQ)
2286 "Before freeing %s[%d] used and unused buf",
2290 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2291 rte_pktmbuf_free(buf);
2296 "After freeing %s[%d] used and unused buf",
2301 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2305 * Stop device: disable interrupt and mark link down
2308 virtio_dev_stop(struct rte_eth_dev *dev)
2310 struct virtio_hw *hw = dev->data->dev_private;
2311 struct rte_eth_link link;
2312 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2314 PMD_INIT_LOG(DEBUG, "stop");
2316 rte_spinlock_lock(&hw->state_lock);
2319 hw->started = false;
2321 if (intr_conf->lsc || intr_conf->rxq) {
2322 virtio_intr_disable(dev);
2324 /* Reset interrupt callback */
2325 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2326 rte_intr_callback_unregister(dev->intr_handle,
2327 virtio_interrupt_handler,
2332 memset(&link, 0, sizeof(link));
2333 rte_eth_linkstatus_set(dev, &link);
2335 rte_spinlock_unlock(&hw->state_lock);
2339 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2341 struct rte_eth_link link;
2343 struct virtio_hw *hw = dev->data->dev_private;
2345 memset(&link, 0, sizeof(link));
2346 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2347 link.link_speed = ETH_SPEED_NUM_10G;
2348 link.link_autoneg = ETH_LINK_FIXED;
2351 link.link_status = ETH_LINK_DOWN;
2352 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2353 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2354 vtpci_read_dev_config(hw,
2355 offsetof(struct virtio_net_config, status),
2356 &status, sizeof(status));
2357 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2358 link.link_status = ETH_LINK_DOWN;
2359 PMD_INIT_LOG(DEBUG, "Port %d is down",
2360 dev->data->port_id);
2362 link.link_status = ETH_LINK_UP;
2363 PMD_INIT_LOG(DEBUG, "Port %d is up",
2364 dev->data->port_id);
2367 link.link_status = ETH_LINK_UP;
2370 return rte_eth_linkstatus_set(dev, &link);
2374 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2376 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2377 struct virtio_hw *hw = dev->data->dev_private;
2378 uint64_t offloads = rxmode->offloads;
2380 if (mask & ETH_VLAN_FILTER_MASK) {
2381 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2382 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2385 "vlan filtering not available on this host");
2391 if (mask & ETH_VLAN_STRIP_MASK)
2392 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2398 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2400 uint64_t tso_mask, host_features;
2401 struct virtio_hw *hw = dev->data->dev_private;
2403 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2405 dev_info->max_rx_queues =
2406 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2407 dev_info->max_tx_queues =
2408 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2409 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2410 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2411 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2413 host_features = VTPCI_OPS(hw)->get_features(hw);
2414 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2415 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2416 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2417 dev_info->rx_offload_capa |=
2418 DEV_RX_OFFLOAD_TCP_CKSUM |
2419 DEV_RX_OFFLOAD_UDP_CKSUM;
2421 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2422 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2423 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2424 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2425 if ((host_features & tso_mask) == tso_mask)
2426 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2428 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2429 DEV_TX_OFFLOAD_VLAN_INSERT;
2430 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2431 dev_info->tx_offload_capa |=
2432 DEV_TX_OFFLOAD_UDP_CKSUM |
2433 DEV_TX_OFFLOAD_TCP_CKSUM;
2435 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2436 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2437 if ((host_features & tso_mask) == tso_mask)
2438 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2444 * It enables testpmd to collect per queue stats.
2447 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2448 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2449 __rte_unused uint8_t is_rx)
2454 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2455 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2456 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2458 RTE_INIT(virtio_init_log)
2460 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2461 if (virtio_logtype_init >= 0)
2462 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2463 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2464 if (virtio_logtype_driver >= 0)
2465 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);