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"
39 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
40 static int virtio_dev_configure(struct rte_eth_dev *dev);
41 static int virtio_dev_start(struct rte_eth_dev *dev);
42 static void virtio_dev_stop(struct rte_eth_dev *dev);
43 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
44 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
45 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
46 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
47 static void virtio_dev_info_get(struct rte_eth_dev *dev,
48 struct rte_eth_dev_info *dev_info);
49 static int virtio_dev_link_update(struct rte_eth_dev *dev,
50 int wait_to_complete);
51 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
53 static void virtio_set_hwaddr(struct virtio_hw *hw);
54 static void virtio_get_hwaddr(struct virtio_hw *hw);
56 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
57 struct rte_eth_stats *stats);
58 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
59 struct rte_eth_xstat *xstats, unsigned n);
60 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
61 struct rte_eth_xstat_name *xstats_names,
63 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
64 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
65 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
66 uint16_t vlan_id, int on);
67 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
68 struct ether_addr *mac_addr,
69 uint32_t index, uint32_t vmdq);
70 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
71 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
72 struct ether_addr *mac_addr);
74 static int virtio_intr_disable(struct rte_eth_dev *dev);
76 static int virtio_dev_queue_stats_mapping_set(
77 struct rte_eth_dev *eth_dev,
82 int virtio_logtype_init;
83 int virtio_logtype_driver;
85 static void virtio_notify_peers(struct rte_eth_dev *dev);
86 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
89 * The set of PCI devices this driver supports
91 static const struct rte_pci_id pci_id_virtio_map[] = {
92 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
94 { .vendor_id = 0, /* sentinel */ },
97 struct rte_virtio_xstats_name_off {
98 char name[RTE_ETH_XSTATS_NAME_SIZE];
102 /* [rt]x_qX_ is prepended to the name string here */
103 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
104 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
105 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
106 {"errors", offsetof(struct virtnet_rx, stats.errors)},
107 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
108 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
109 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
110 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
111 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
112 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
113 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
114 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
115 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
116 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
119 /* [rt]x_qX_ is prepended to the name string here */
120 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
121 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
122 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
123 {"errors", offsetof(struct virtnet_tx, stats.errors)},
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_packed;
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 ^=
172 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1);
175 for (k = 0; k < pkt_num; k++) {
176 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
177 + sizeof(struct virtio_net_ctrl_hdr)
178 + sizeof(ctrl->status) + sizeof(uint8_t) * sum;
179 desc[vq->vq_avail_idx].len = dlen[k];
180 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
181 vq->vq_packed.cached_flags;
185 if (++vq->vq_avail_idx >= vq->vq_nentries) {
186 vq->vq_avail_idx -= vq->vq_nentries;
187 vq->vq_packed.cached_flags ^=
188 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1);
192 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
193 + sizeof(struct virtio_net_ctrl_hdr);
194 desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
195 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
196 vq->vq_packed.cached_flags;
199 if (++vq->vq_avail_idx >= vq->vq_nentries) {
200 vq->vq_avail_idx -= vq->vq_nentries;
201 vq->vq_packed.cached_flags ^=
202 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1);
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;
241 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
242 int *dlen, int pkt_num)
246 virtio_net_ctrl_ack status = ~0;
247 struct virtio_pmd_ctrl *result;
248 struct virtqueue *vq;
250 ctrl->status = status;
252 if (!cvq || !cvq->vq) {
253 PMD_INIT_LOG(ERR, "Control queue is not supported.");
257 rte_spinlock_lock(&cvq->lock);
259 head = vq->vq_desc_head_idx;
261 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
262 "vq->hw->cvq = %p vq = %p",
263 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
265 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
266 rte_spinlock_unlock(&cvq->lock);
270 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
271 sizeof(struct virtio_pmd_ctrl));
273 if (vtpci_packed_queue(vq->hw)) {
274 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
279 * Format is enforced in qemu code:
280 * One TX packet for header;
281 * At least one TX packet per argument;
282 * One RX packet for ACK.
284 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
285 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
286 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
288 i = vq->vq_split.ring.desc[head].next;
290 for (k = 0; k < pkt_num; k++) {
291 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
292 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
293 + sizeof(struct virtio_net_ctrl_hdr)
294 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
295 vq->vq_split.ring.desc[i].len = dlen[k];
298 i = vq->vq_split.ring.desc[i].next;
301 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
302 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
303 + sizeof(struct virtio_net_ctrl_hdr);
304 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
307 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
309 vq_update_avail_ring(vq, head);
310 vq_update_avail_idx(vq);
312 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
314 virtqueue_notify(vq);
317 while (VIRTQUEUE_NUSED(vq) == 0) {
322 while (VIRTQUEUE_NUSED(vq)) {
323 uint32_t idx, desc_idx, used_idx;
324 struct vring_used_elem *uep;
326 used_idx = (uint32_t)(vq->vq_used_cons_idx
327 & (vq->vq_nentries - 1));
328 uep = &vq->vq_split.ring.used->ring[used_idx];
329 idx = (uint32_t) uep->id;
332 while (vq->vq_split.ring.desc[desc_idx].flags &
334 desc_idx = vq->vq_split.ring.desc[desc_idx].next;
338 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
339 vq->vq_desc_head_idx = idx;
341 vq->vq_used_cons_idx++;
345 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
346 vq->vq_free_cnt, vq->vq_desc_head_idx);
348 result = cvq->virtio_net_hdr_mz->addr;
351 rte_spinlock_unlock(&cvq->lock);
352 return result->status;
356 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
358 struct virtio_hw *hw = dev->data->dev_private;
359 struct virtio_pmd_ctrl ctrl;
363 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
364 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
365 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
367 dlen[0] = sizeof(uint16_t);
369 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
371 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
372 "failed, this is too late now...");
380 virtio_dev_queue_release(void *queue __rte_unused)
386 virtio_get_nr_vq(struct virtio_hw *hw)
388 uint16_t nr_vq = hw->max_queue_pairs * 2;
390 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
397 virtio_init_vring(struct virtqueue *vq)
399 int size = vq->vq_nentries;
400 uint8_t *ring_mem = vq->vq_ring_virt_mem;
402 PMD_INIT_FUNC_TRACE();
404 memset(ring_mem, 0, vq->vq_ring_size);
406 vq->vq_used_cons_idx = 0;
407 vq->vq_desc_head_idx = 0;
408 vq->vq_avail_idx = 0;
409 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
410 vq->vq_free_cnt = vq->vq_nentries;
411 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
412 if (vtpci_packed_queue(vq->hw)) {
413 vring_init_packed(&vq->vq_packed.ring, ring_mem,
414 VIRTIO_PCI_VRING_ALIGN, size);
415 vring_desc_init_packed(vq, size);
417 struct vring *vr = &vq->vq_split.ring;
419 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
420 vring_desc_init_split(vr->desc, size);
423 * Disable device(host) interrupting guest
425 virtqueue_disable_intr(vq);
429 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
431 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
432 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
433 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
434 unsigned int vq_size, size;
435 struct virtio_hw *hw = dev->data->dev_private;
436 struct virtnet_rx *rxvq = NULL;
437 struct virtnet_tx *txvq = NULL;
438 struct virtnet_ctl *cvq = NULL;
439 struct virtqueue *vq;
440 size_t sz_hdr_mz = 0;
441 void *sw_ring = NULL;
442 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
444 int numa_node = dev->device->numa_node;
446 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
447 vtpci_queue_idx, numa_node);
450 * Read the virtqueue size from the Queue Size field
451 * Always power of 2 and if 0 virtqueue does not exist
453 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
454 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
456 PMD_INIT_LOG(ERR, "virtqueue does not exist");
460 if (!rte_is_power_of_2(vq_size)) {
461 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
465 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
466 dev->data->port_id, vtpci_queue_idx);
468 size = RTE_ALIGN_CEIL(sizeof(*vq) +
469 vq_size * sizeof(struct vq_desc_extra),
470 RTE_CACHE_LINE_SIZE);
471 if (queue_type == VTNET_TQ) {
473 * For each xmit packet, allocate a virtio_net_hdr
474 * and indirect ring elements
476 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
477 } else if (queue_type == VTNET_CQ) {
478 /* Allocate a page for control vq command, data and status */
479 sz_hdr_mz = PAGE_SIZE;
482 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
485 PMD_INIT_LOG(ERR, "can not allocate vq");
488 hw->vqs[vtpci_queue_idx] = vq;
491 vq->vq_queue_index = vtpci_queue_idx;
492 vq->vq_nentries = vq_size;
493 if (vtpci_packed_queue(hw)) {
494 vq->vq_packed.used_wrap_counter = 1;
495 vq->vq_packed.cached_flags = VRING_DESC_F_AVAIL(1);
496 vq->vq_packed.event_flags_shadow = 0;
497 if (queue_type == VTNET_RQ)
498 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
502 * Reserve a memzone for vring elements
504 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN);
505 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
506 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
507 size, vq->vq_ring_size);
509 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
510 numa_node, RTE_MEMZONE_IOVA_CONTIG,
511 VIRTIO_PCI_VRING_ALIGN);
513 if (rte_errno == EEXIST)
514 mz = rte_memzone_lookup(vq_name);
521 memset(mz->addr, 0, mz->len);
523 vq->vq_ring_mem = mz->iova;
524 vq->vq_ring_virt_mem = mz->addr;
525 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
527 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
528 (uint64_t)(uintptr_t)mz->addr);
530 virtio_init_vring(vq);
533 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
534 dev->data->port_id, vtpci_queue_idx);
535 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
536 numa_node, RTE_MEMZONE_IOVA_CONTIG,
537 RTE_CACHE_LINE_SIZE);
538 if (hdr_mz == NULL) {
539 if (rte_errno == EEXIST)
540 hdr_mz = rte_memzone_lookup(vq_hdr_name);
541 if (hdr_mz == NULL) {
548 if (queue_type == VTNET_RQ) {
549 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
550 sizeof(vq->sw_ring[0]);
552 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
553 RTE_CACHE_LINE_SIZE, numa_node);
555 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
560 vq->sw_ring = sw_ring;
563 rxvq->port_id = dev->data->port_id;
565 } else if (queue_type == VTNET_TQ) {
568 txvq->port_id = dev->data->port_id;
570 txvq->virtio_net_hdr_mz = hdr_mz;
571 txvq->virtio_net_hdr_mem = hdr_mz->iova;
572 } else if (queue_type == VTNET_CQ) {
576 cvq->virtio_net_hdr_mz = hdr_mz;
577 cvq->virtio_net_hdr_mem = hdr_mz->iova;
578 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
583 /* For virtio_user case (that is when hw->dev is NULL), we use
584 * virtual address. And we need properly set _offset_, please see
585 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
587 if (!hw->virtio_user_dev)
588 vq->offset = offsetof(struct rte_mbuf, buf_iova);
590 vq->vq_ring_mem = (uintptr_t)mz->addr;
591 vq->offset = offsetof(struct rte_mbuf, buf_addr);
592 if (queue_type == VTNET_TQ)
593 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
594 else if (queue_type == VTNET_CQ)
595 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
598 if (queue_type == VTNET_TQ) {
599 struct virtio_tx_region *txr;
603 memset(txr, 0, vq_size * sizeof(*txr));
604 for (i = 0; i < vq_size; i++) {
605 struct vring_desc *start_dp = txr[i].tx_indir;
606 struct vring_packed_desc *start_dp_packed =
609 /* first indirect descriptor is always the tx header */
610 if (vtpci_packed_queue(hw)) {
611 start_dp_packed->addr = txvq->virtio_net_hdr_mem
613 + offsetof(struct virtio_tx_region,
615 start_dp_packed->len = hw->vtnet_hdr_size;
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);
739 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
741 struct virtio_hw *hw = dev->data->dev_private;
742 struct virtio_pmd_ctrl ctrl;
746 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
747 PMD_INIT_LOG(INFO, "host does not support rx control");
751 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
752 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
756 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
758 PMD_INIT_LOG(ERR, "Failed to enable promisc");
762 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
764 struct virtio_hw *hw = dev->data->dev_private;
765 struct virtio_pmd_ctrl ctrl;
769 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
770 PMD_INIT_LOG(INFO, "host does not support rx control");
774 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
775 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
779 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
781 PMD_INIT_LOG(ERR, "Failed to disable promisc");
785 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
787 struct virtio_hw *hw = dev->data->dev_private;
788 struct virtio_pmd_ctrl ctrl;
792 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
793 PMD_INIT_LOG(INFO, "host does not support rx control");
797 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
798 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
802 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
804 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
808 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
810 struct virtio_hw *hw = dev->data->dev_private;
811 struct virtio_pmd_ctrl ctrl;
815 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
816 PMD_INIT_LOG(INFO, "host does not support rx control");
820 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
821 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
825 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
827 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
830 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
832 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
834 struct virtio_hw *hw = dev->data->dev_private;
835 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
837 uint32_t frame_size = mtu + ether_hdr_len;
838 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
840 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
842 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
843 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
844 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
851 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
853 struct virtio_hw *hw = dev->data->dev_private;
854 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
855 struct virtqueue *vq = rxvq->vq;
857 virtqueue_enable_intr(vq);
858 virtio_mb(hw->weak_barriers);
863 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
865 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
866 struct virtqueue *vq = rxvq->vq;
868 virtqueue_disable_intr(vq);
873 * dev_ops for virtio, bare necessities for basic operation
875 static const struct eth_dev_ops virtio_eth_dev_ops = {
876 .dev_configure = virtio_dev_configure,
877 .dev_start = virtio_dev_start,
878 .dev_stop = virtio_dev_stop,
879 .dev_close = virtio_dev_close,
880 .promiscuous_enable = virtio_dev_promiscuous_enable,
881 .promiscuous_disable = virtio_dev_promiscuous_disable,
882 .allmulticast_enable = virtio_dev_allmulticast_enable,
883 .allmulticast_disable = virtio_dev_allmulticast_disable,
884 .mtu_set = virtio_mtu_set,
885 .dev_infos_get = virtio_dev_info_get,
886 .stats_get = virtio_dev_stats_get,
887 .xstats_get = virtio_dev_xstats_get,
888 .xstats_get_names = virtio_dev_xstats_get_names,
889 .stats_reset = virtio_dev_stats_reset,
890 .xstats_reset = virtio_dev_stats_reset,
891 .link_update = virtio_dev_link_update,
892 .vlan_offload_set = virtio_dev_vlan_offload_set,
893 .rx_queue_setup = virtio_dev_rx_queue_setup,
894 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
895 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
896 .rx_queue_release = virtio_dev_queue_release,
897 .rx_descriptor_done = virtio_dev_rx_queue_done,
898 .tx_queue_setup = virtio_dev_tx_queue_setup,
899 .tx_queue_release = virtio_dev_queue_release,
900 /* collect stats per queue */
901 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
902 .vlan_filter_set = virtio_vlan_filter_set,
903 .mac_addr_add = virtio_mac_addr_add,
904 .mac_addr_remove = virtio_mac_addr_remove,
905 .mac_addr_set = virtio_mac_addr_set,
909 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
913 for (i = 0; i < dev->data->nb_tx_queues; i++) {
914 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
918 stats->opackets += txvq->stats.packets;
919 stats->obytes += txvq->stats.bytes;
920 stats->oerrors += txvq->stats.errors;
922 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
923 stats->q_opackets[i] = txvq->stats.packets;
924 stats->q_obytes[i] = txvq->stats.bytes;
928 for (i = 0; i < dev->data->nb_rx_queues; i++) {
929 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
933 stats->ipackets += rxvq->stats.packets;
934 stats->ibytes += rxvq->stats.bytes;
935 stats->ierrors += rxvq->stats.errors;
937 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
938 stats->q_ipackets[i] = rxvq->stats.packets;
939 stats->q_ibytes[i] = rxvq->stats.bytes;
943 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
946 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
947 struct rte_eth_xstat_name *xstats_names,
948 __rte_unused unsigned limit)
954 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
955 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
957 if (xstats_names != NULL) {
958 /* Note: limit checked in rte_eth_xstats_names() */
960 for (i = 0; i < dev->data->nb_rx_queues; i++) {
961 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
964 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
965 snprintf(xstats_names[count].name,
966 sizeof(xstats_names[count].name),
968 rte_virtio_rxq_stat_strings[t].name);
973 for (i = 0; i < dev->data->nb_tx_queues; i++) {
974 struct virtnet_tx *txvq = dev->data->tx_queues[i];
977 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
978 snprintf(xstats_names[count].name,
979 sizeof(xstats_names[count].name),
981 rte_virtio_txq_stat_strings[t].name);
991 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
997 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
998 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1003 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1004 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1011 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1012 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1013 rte_virtio_rxq_stat_strings[t].offset);
1014 xstats[count].id = count;
1019 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1020 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1027 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1028 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1029 rte_virtio_txq_stat_strings[t].offset);
1030 xstats[count].id = count;
1039 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1041 virtio_update_stats(dev, stats);
1047 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1051 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1052 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1056 txvq->stats.packets = 0;
1057 txvq->stats.bytes = 0;
1058 txvq->stats.errors = 0;
1059 txvq->stats.multicast = 0;
1060 txvq->stats.broadcast = 0;
1061 memset(txvq->stats.size_bins, 0,
1062 sizeof(txvq->stats.size_bins[0]) * 8);
1065 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1066 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1070 rxvq->stats.packets = 0;
1071 rxvq->stats.bytes = 0;
1072 rxvq->stats.errors = 0;
1073 rxvq->stats.multicast = 0;
1074 rxvq->stats.broadcast = 0;
1075 memset(rxvq->stats.size_bins, 0,
1076 sizeof(rxvq->stats.size_bins[0]) * 8);
1081 virtio_set_hwaddr(struct virtio_hw *hw)
1083 vtpci_write_dev_config(hw,
1084 offsetof(struct virtio_net_config, mac),
1085 &hw->mac_addr, ETHER_ADDR_LEN);
1089 virtio_get_hwaddr(struct virtio_hw *hw)
1091 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1092 vtpci_read_dev_config(hw,
1093 offsetof(struct virtio_net_config, mac),
1094 &hw->mac_addr, ETHER_ADDR_LEN);
1096 eth_random_addr(&hw->mac_addr[0]);
1097 virtio_set_hwaddr(hw);
1102 virtio_mac_table_set(struct virtio_hw *hw,
1103 const struct virtio_net_ctrl_mac *uc,
1104 const struct virtio_net_ctrl_mac *mc)
1106 struct virtio_pmd_ctrl ctrl;
1109 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1110 PMD_DRV_LOG(INFO, "host does not support mac table");
1114 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1115 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1117 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1118 memcpy(ctrl.data, uc, len[0]);
1120 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1121 memcpy(ctrl.data + len[0], mc, len[1]);
1123 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1125 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1130 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1131 uint32_t index, uint32_t vmdq __rte_unused)
1133 struct virtio_hw *hw = dev->data->dev_private;
1134 const struct ether_addr *addrs = dev->data->mac_addrs;
1136 struct virtio_net_ctrl_mac *uc, *mc;
1138 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1139 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1143 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1145 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1148 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1149 const struct ether_addr *addr
1150 = (i == index) ? mac_addr : addrs + i;
1151 struct virtio_net_ctrl_mac *tbl
1152 = is_multicast_ether_addr(addr) ? mc : uc;
1154 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1157 return virtio_mac_table_set(hw, uc, mc);
1161 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1163 struct virtio_hw *hw = dev->data->dev_private;
1164 struct ether_addr *addrs = dev->data->mac_addrs;
1165 struct virtio_net_ctrl_mac *uc, *mc;
1168 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1169 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1173 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1175 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1178 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1179 struct virtio_net_ctrl_mac *tbl;
1181 if (i == index || is_zero_ether_addr(addrs + i))
1184 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1185 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1188 virtio_mac_table_set(hw, uc, mc);
1192 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1194 struct virtio_hw *hw = dev->data->dev_private;
1196 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1198 /* Use atomic update if available */
1199 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1200 struct virtio_pmd_ctrl ctrl;
1201 int len = ETHER_ADDR_LEN;
1203 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1204 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1206 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1207 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1210 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1213 virtio_set_hwaddr(hw);
1218 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1220 struct virtio_hw *hw = dev->data->dev_private;
1221 struct virtio_pmd_ctrl ctrl;
1224 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1227 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1228 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1229 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1230 len = sizeof(vlan_id);
1232 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1236 virtio_intr_enable(struct rte_eth_dev *dev)
1238 struct virtio_hw *hw = dev->data->dev_private;
1240 if (rte_intr_enable(dev->intr_handle) < 0)
1243 if (!hw->virtio_user_dev)
1244 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1250 virtio_intr_disable(struct rte_eth_dev *dev)
1252 struct virtio_hw *hw = dev->data->dev_private;
1254 if (rte_intr_disable(dev->intr_handle) < 0)
1257 if (!hw->virtio_user_dev)
1258 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1264 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1266 uint64_t host_features;
1268 /* Prepare guest_features: feature that driver wants to support */
1269 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1272 /* Read device(host) feature bits */
1273 host_features = VTPCI_OPS(hw)->get_features(hw);
1274 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1277 /* If supported, ensure MTU value is valid before acknowledging it. */
1278 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1279 struct virtio_net_config config;
1281 vtpci_read_dev_config(hw,
1282 offsetof(struct virtio_net_config, mtu),
1283 &config.mtu, sizeof(config.mtu));
1285 if (config.mtu < ETHER_MIN_MTU)
1286 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1290 * Negotiate features: Subset of device feature bits are written back
1291 * guest feature bits.
1293 hw->guest_features = req_features;
1294 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1295 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1296 hw->guest_features);
1299 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1301 "VIRTIO_F_VERSION_1 features is not enabled.");
1304 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1305 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1307 "failed to set FEATURES_OK status!");
1312 hw->req_guest_features = req_features;
1318 virtio_dev_pause(struct rte_eth_dev *dev)
1320 struct virtio_hw *hw = dev->data->dev_private;
1322 rte_spinlock_lock(&hw->state_lock);
1324 if (hw->started == 0) {
1325 /* Device is just stopped. */
1326 rte_spinlock_unlock(&hw->state_lock);
1331 * Prevent the worker threads from touching queues to avoid contention,
1332 * 1 ms should be enough for the ongoing Tx function to finish.
1339 * Recover hw state to let the worker threads continue.
1342 virtio_dev_resume(struct rte_eth_dev *dev)
1344 struct virtio_hw *hw = dev->data->dev_private;
1347 rte_spinlock_unlock(&hw->state_lock);
1351 * Should be called only after device is paused.
1354 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1357 struct virtio_hw *hw = dev->data->dev_private;
1358 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1361 hw->inject_pkts = tx_pkts;
1362 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1363 hw->inject_pkts = NULL;
1369 virtio_notify_peers(struct rte_eth_dev *dev)
1371 struct virtio_hw *hw = dev->data->dev_private;
1372 struct virtnet_rx *rxvq;
1373 struct rte_mbuf *rarp_mbuf;
1375 if (!dev->data->rx_queues)
1378 rxvq = dev->data->rx_queues[0];
1382 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1383 (struct ether_addr *)hw->mac_addr);
1384 if (rarp_mbuf == NULL) {
1385 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1389 /* If virtio port just stopped, no need to send RARP */
1390 if (virtio_dev_pause(dev) < 0) {
1391 rte_pktmbuf_free(rarp_mbuf);
1395 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1396 virtio_dev_resume(dev);
1400 virtio_ack_link_announce(struct rte_eth_dev *dev)
1402 struct virtio_hw *hw = dev->data->dev_private;
1403 struct virtio_pmd_ctrl ctrl;
1405 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1406 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1408 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1412 * Process virtio config changed interrupt. Call the callback
1413 * if link state changed, generate gratuitous RARP packet if
1414 * the status indicates an ANNOUNCE.
1417 virtio_interrupt_handler(void *param)
1419 struct rte_eth_dev *dev = param;
1420 struct virtio_hw *hw = dev->data->dev_private;
1424 /* Read interrupt status which clears interrupt */
1425 isr = vtpci_isr(hw);
1426 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1428 if (virtio_intr_enable(dev) < 0)
1429 PMD_DRV_LOG(ERR, "interrupt enable failed");
1431 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1432 if (virtio_dev_link_update(dev, 0) == 0)
1433 _rte_eth_dev_callback_process(dev,
1434 RTE_ETH_EVENT_INTR_LSC,
1437 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1438 vtpci_read_dev_config(hw,
1439 offsetof(struct virtio_net_config, status),
1440 &status, sizeof(status));
1441 if (status & VIRTIO_NET_S_ANNOUNCE) {
1442 virtio_notify_peers(dev);
1444 virtio_ack_link_announce(dev);
1450 /* set rx and tx handlers according to what is supported */
1452 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1454 struct virtio_hw *hw = eth_dev->data->dev_private;
1456 if (vtpci_packed_queue(hw)) {
1458 "virtio: using packed ring %s Tx path on port %u",
1459 hw->use_inorder_tx ? "inorder" : "standard",
1460 eth_dev->data->port_id);
1461 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1463 if (hw->use_inorder_tx) {
1464 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1465 eth_dev->data->port_id);
1466 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1468 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1469 eth_dev->data->port_id);
1470 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1474 if (vtpci_packed_queue(hw)) {
1475 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1477 "virtio: using packed ring mergeable buffer Rx path on port %u",
1478 eth_dev->data->port_id);
1479 eth_dev->rx_pkt_burst =
1480 &virtio_recv_mergeable_pkts_packed;
1483 "virtio: using packed ring standard Rx path on port %u",
1484 eth_dev->data->port_id);
1485 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1488 if (hw->use_simple_rx) {
1489 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1490 eth_dev->data->port_id);
1491 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1492 } else if (hw->use_inorder_rx) {
1494 "virtio: using inorder Rx path on port %u",
1495 eth_dev->data->port_id);
1496 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1497 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1499 "virtio: using mergeable buffer Rx path on port %u",
1500 eth_dev->data->port_id);
1501 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1503 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1504 eth_dev->data->port_id);
1505 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1511 /* Only support 1:1 queue/interrupt mapping so far.
1512 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1513 * interrupt vectors (<N+1).
1516 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1519 struct virtio_hw *hw = dev->data->dev_private;
1521 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1522 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1523 dev->intr_handle->intr_vec[i] = i + 1;
1524 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1525 VIRTIO_MSI_NO_VECTOR) {
1526 PMD_DRV_LOG(ERR, "failed to set queue vector");
1535 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1538 struct virtio_hw *hw = dev->data->dev_private;
1540 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1541 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1542 VTPCI_OPS(hw)->set_queue_irq(hw,
1543 hw->vqs[i * VTNET_CQ],
1544 VIRTIO_MSI_NO_VECTOR);
1548 virtio_configure_intr(struct rte_eth_dev *dev)
1550 struct virtio_hw *hw = dev->data->dev_private;
1552 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1553 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1557 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1558 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1562 if (!dev->intr_handle->intr_vec) {
1563 dev->intr_handle->intr_vec =
1564 rte_zmalloc("intr_vec",
1565 hw->max_queue_pairs * sizeof(int), 0);
1566 if (!dev->intr_handle->intr_vec) {
1567 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1568 hw->max_queue_pairs);
1573 /* Re-register callback to update max_intr */
1574 rte_intr_callback_unregister(dev->intr_handle,
1575 virtio_interrupt_handler,
1577 rte_intr_callback_register(dev->intr_handle,
1578 virtio_interrupt_handler,
1581 /* DO NOT try to remove this! This function will enable msix, or QEMU
1582 * will encounter SIGSEGV when DRIVER_OK is sent.
1583 * And for legacy devices, this should be done before queue/vec binding
1584 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1585 * (22) will be ignored.
1587 if (virtio_intr_enable(dev) < 0) {
1588 PMD_DRV_LOG(ERR, "interrupt enable failed");
1592 if (virtio_queues_bind_intr(dev) < 0) {
1593 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1600 /* reset device and renegotiate features if needed */
1602 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1604 struct virtio_hw *hw = eth_dev->data->dev_private;
1605 struct virtio_net_config *config;
1606 struct virtio_net_config local_config;
1607 struct rte_pci_device *pci_dev = NULL;
1610 /* Reset the device although not necessary at startup */
1614 virtio_dev_free_mbufs(eth_dev);
1615 virtio_free_queues(hw);
1618 /* Tell the host we've noticed this device. */
1619 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1621 /* Tell the host we've known how to drive the device. */
1622 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1623 if (virtio_negotiate_features(hw, req_features) < 0)
1626 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1628 if (!hw->virtio_user_dev) {
1629 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1630 rte_eth_copy_pci_info(eth_dev, pci_dev);
1633 /* If host does not support both status and MSI-X then disable LSC */
1634 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1635 hw->use_msix != VIRTIO_MSIX_NONE)
1636 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1638 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1640 /* Setting up rx_header size for the device */
1641 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1642 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) ||
1643 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED))
1644 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1646 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1648 /* Copy the permanent MAC address to: virtio_hw */
1649 virtio_get_hwaddr(hw);
1650 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1651 ð_dev->data->mac_addrs[0]);
1653 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1654 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1655 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1657 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1658 config = &local_config;
1660 vtpci_read_dev_config(hw,
1661 offsetof(struct virtio_net_config, mac),
1662 &config->mac, sizeof(config->mac));
1664 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1665 vtpci_read_dev_config(hw,
1666 offsetof(struct virtio_net_config, status),
1667 &config->status, sizeof(config->status));
1670 "VIRTIO_NET_F_STATUS is not supported");
1674 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1675 vtpci_read_dev_config(hw,
1676 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1677 &config->max_virtqueue_pairs,
1678 sizeof(config->max_virtqueue_pairs));
1681 "VIRTIO_NET_F_MQ is not supported");
1682 config->max_virtqueue_pairs = 1;
1685 hw->max_queue_pairs = config->max_virtqueue_pairs;
1687 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1688 vtpci_read_dev_config(hw,
1689 offsetof(struct virtio_net_config, mtu),
1691 sizeof(config->mtu));
1694 * MTU value has already been checked at negotiation
1695 * time, but check again in case it has changed since
1696 * then, which should not happen.
1698 if (config->mtu < ETHER_MIN_MTU) {
1699 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1704 hw->max_mtu = config->mtu;
1705 /* Set initial MTU to maximum one supported by vhost */
1706 eth_dev->data->mtu = config->mtu;
1709 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1710 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1713 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1714 config->max_virtqueue_pairs);
1715 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1717 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1718 config->mac[0], config->mac[1],
1719 config->mac[2], config->mac[3],
1720 config->mac[4], config->mac[5]);
1722 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1723 hw->max_queue_pairs = 1;
1724 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1725 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1728 ret = virtio_alloc_queues(eth_dev);
1732 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1733 if (virtio_configure_intr(eth_dev) < 0) {
1734 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1739 vtpci_reinit_complete(hw);
1742 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1743 eth_dev->data->port_id, pci_dev->id.vendor_id,
1744 pci_dev->id.device_id);
1750 * Remap the PCI device again (IO port map for legacy device and
1751 * memory map for modern device), so that the secondary process
1752 * could have the PCI initiated correctly.
1755 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1759 * We don't have to re-parse the PCI config space, since
1760 * rte_pci_map_device() makes sure the mapped address
1761 * in secondary process would equal to the one mapped in
1762 * the primary process: error will be returned if that
1763 * requirement is not met.
1765 * That said, we could simply reuse all cap pointers
1766 * (such as dev_cfg, common_cfg, etc.) parsed from the
1767 * primary process, which is stored in shared memory.
1769 if (rte_pci_map_device(pci_dev)) {
1770 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1774 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1782 virtio_set_vtpci_ops(struct virtio_hw *hw)
1784 #ifdef RTE_VIRTIO_USER
1785 if (hw->virtio_user_dev)
1786 VTPCI_OPS(hw) = &virtio_user_ops;
1790 VTPCI_OPS(hw) = &modern_ops;
1792 VTPCI_OPS(hw) = &legacy_ops;
1796 * This function is based on probe() function in virtio_pci.c
1797 * It returns 0 on success.
1800 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1802 struct virtio_hw *hw = eth_dev->data->dev_private;
1805 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1807 eth_dev->dev_ops = &virtio_eth_dev_ops;
1809 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1810 if (!hw->virtio_user_dev) {
1811 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1816 virtio_set_vtpci_ops(hw);
1817 set_rxtx_funcs(eth_dev);
1822 /* Allocate memory for storing MAC addresses */
1823 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1824 if (eth_dev->data->mac_addrs == NULL) {
1826 "Failed to allocate %d bytes needed to store MAC addresses",
1827 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1831 hw->port_id = eth_dev->data->port_id;
1832 /* For virtio_user case the hw->virtio_user_dev is populated by
1833 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1835 if (!hw->virtio_user_dev) {
1836 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1841 /* reset device and negotiate default features */
1842 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1849 rte_free(eth_dev->data->mac_addrs);
1854 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1856 PMD_INIT_FUNC_TRACE();
1858 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1861 virtio_dev_stop(eth_dev);
1862 virtio_dev_close(eth_dev);
1864 eth_dev->dev_ops = NULL;
1865 eth_dev->tx_pkt_burst = NULL;
1866 eth_dev->rx_pkt_burst = NULL;
1868 if (eth_dev->device)
1869 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1871 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1876 static int vdpa_check_handler(__rte_unused const char *key,
1877 const char *value, __rte_unused void *opaque)
1879 if (strcmp(value, "1"))
1886 vdpa_mode_selected(struct rte_devargs *devargs)
1888 struct rte_kvargs *kvlist;
1889 const char *key = "vdpa";
1892 if (devargs == NULL)
1895 kvlist = rte_kvargs_parse(devargs->args, NULL);
1899 if (!rte_kvargs_count(kvlist, key))
1902 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1903 if (rte_kvargs_process(kvlist, key,
1904 vdpa_check_handler, NULL) < 0) {
1910 rte_kvargs_free(kvlist);
1914 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1915 struct rte_pci_device *pci_dev)
1917 if (rte_eal_iopl_init() != 0) {
1918 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1922 /* virtio pmd skips probe if device needs to work in vdpa mode */
1923 if (vdpa_mode_selected(pci_dev->device.devargs))
1926 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1927 eth_virtio_dev_init);
1930 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1932 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1935 static struct rte_pci_driver rte_virtio_pmd = {
1937 .name = "net_virtio",
1939 .id_table = pci_id_virtio_map,
1941 .probe = eth_virtio_pci_probe,
1942 .remove = eth_virtio_pci_remove,
1945 RTE_INIT(rte_virtio_pmd_init)
1947 rte_eal_iopl_init();
1948 rte_pci_register(&rte_virtio_pmd);
1952 rx_offload_enabled(struct virtio_hw *hw)
1954 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1955 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1956 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1960 tx_offload_enabled(struct virtio_hw *hw)
1962 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1963 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1964 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1968 * Configure virtio device
1969 * It returns 0 on success.
1972 virtio_dev_configure(struct rte_eth_dev *dev)
1974 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1975 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1976 struct virtio_hw *hw = dev->data->dev_private;
1977 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
1979 uint64_t rx_offloads = rxmode->offloads;
1980 uint64_t tx_offloads = txmode->offloads;
1981 uint64_t req_features;
1984 PMD_INIT_LOG(DEBUG, "configure");
1985 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1987 if (dev->data->dev_conf.intr_conf.rxq) {
1988 ret = virtio_init_device(dev, hw->req_guest_features);
1993 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
1994 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1996 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1997 DEV_RX_OFFLOAD_TCP_CKSUM))
1998 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2000 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2002 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2003 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2005 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2006 DEV_TX_OFFLOAD_TCP_CKSUM))
2007 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2009 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2011 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2012 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2014 /* if request features changed, reinit the device */
2015 if (req_features != hw->req_guest_features) {
2016 ret = virtio_init_device(dev, req_features);
2021 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2022 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2023 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2025 "rx checksum not available on this host");
2029 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2030 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2031 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2033 "Large Receive Offload not available on this host");
2037 /* start control queue */
2038 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2039 virtio_dev_cq_start(dev);
2041 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2044 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
2045 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2047 "vlan filtering not available on this host");
2051 hw->has_tx_offload = tx_offload_enabled(hw);
2052 hw->has_rx_offload = rx_offload_enabled(hw);
2054 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2055 /* Enable vector (0) for Link State Intrerrupt */
2056 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
2057 VIRTIO_MSI_NO_VECTOR) {
2058 PMD_DRV_LOG(ERR, "failed to set config vector");
2062 rte_spinlock_init(&hw->state_lock);
2064 hw->use_simple_rx = 1;
2066 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2067 hw->use_inorder_tx = 1;
2068 hw->use_inorder_rx = 1;
2069 hw->use_simple_rx = 0;
2072 if (vtpci_packed_queue(hw)) {
2073 hw->use_simple_rx = 0;
2074 hw->use_inorder_rx = 0;
2077 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
2078 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2079 hw->use_simple_rx = 0;
2082 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2083 hw->use_simple_rx = 0;
2086 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2087 DEV_RX_OFFLOAD_TCP_CKSUM |
2088 DEV_RX_OFFLOAD_TCP_LRO |
2089 DEV_RX_OFFLOAD_VLAN_STRIP))
2090 hw->use_simple_rx = 0;
2099 virtio_dev_start(struct rte_eth_dev *dev)
2101 uint16_t nb_queues, i;
2102 struct virtnet_rx *rxvq;
2103 struct virtnet_tx *txvq __rte_unused;
2104 struct virtio_hw *hw = dev->data->dev_private;
2107 /* Finish the initialization of the queues */
2108 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2109 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2113 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2114 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2119 /* check if lsc interrupt feature is enabled */
2120 if (dev->data->dev_conf.intr_conf.lsc) {
2121 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2122 PMD_DRV_LOG(ERR, "link status not supported by host");
2127 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2128 * in device configure, but it could be unmapped when device is
2131 if (dev->data->dev_conf.intr_conf.lsc ||
2132 dev->data->dev_conf.intr_conf.rxq) {
2133 virtio_intr_disable(dev);
2135 /* Setup interrupt callback */
2136 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2137 rte_intr_callback_register(dev->intr_handle,
2138 virtio_interrupt_handler,
2141 if (virtio_intr_enable(dev) < 0) {
2142 PMD_DRV_LOG(ERR, "interrupt enable failed");
2147 /*Notify the backend
2148 *Otherwise the tap backend might already stop its queue due to fullness.
2149 *vhost backend will have no chance to be waked up
2151 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2152 if (hw->max_queue_pairs > 1) {
2153 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2157 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2159 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2160 rxvq = dev->data->rx_queues[i];
2161 /* Flush the old packets */
2162 virtqueue_rxvq_flush(rxvq->vq);
2163 virtqueue_notify(rxvq->vq);
2166 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2167 txvq = dev->data->tx_queues[i];
2168 virtqueue_notify(txvq->vq);
2171 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2173 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2174 rxvq = dev->data->rx_queues[i];
2175 VIRTQUEUE_DUMP(rxvq->vq);
2178 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2179 txvq = dev->data->tx_queues[i];
2180 VIRTQUEUE_DUMP(txvq->vq);
2183 set_rxtx_funcs(dev);
2186 /* Initialize Link state */
2187 virtio_dev_link_update(dev, 0);
2192 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2194 struct virtio_hw *hw = dev->data->dev_private;
2195 uint16_t nr_vq = virtio_get_nr_vq(hw);
2196 const char *type __rte_unused;
2197 unsigned int i, mbuf_num = 0;
2198 struct virtqueue *vq;
2199 struct rte_mbuf *buf;
2202 if (hw->vqs == NULL)
2205 for (i = 0; i < nr_vq; i++) {
2210 queue_type = virtio_get_queue_type(hw, i);
2211 if (queue_type == VTNET_RQ)
2213 else if (queue_type == VTNET_TQ)
2219 "Before freeing %s[%d] used and unused buf",
2223 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2224 rte_pktmbuf_free(buf);
2229 "After freeing %s[%d] used and unused buf",
2234 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2238 * Stop device: disable interrupt and mark link down
2241 virtio_dev_stop(struct rte_eth_dev *dev)
2243 struct virtio_hw *hw = dev->data->dev_private;
2244 struct rte_eth_link link;
2245 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2247 PMD_INIT_LOG(DEBUG, "stop");
2249 rte_spinlock_lock(&hw->state_lock);
2252 hw->started = false;
2254 if (intr_conf->lsc || intr_conf->rxq) {
2255 virtio_intr_disable(dev);
2257 /* Reset interrupt callback */
2258 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2259 rte_intr_callback_unregister(dev->intr_handle,
2260 virtio_interrupt_handler,
2265 memset(&link, 0, sizeof(link));
2266 rte_eth_linkstatus_set(dev, &link);
2268 rte_spinlock_unlock(&hw->state_lock);
2272 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2274 struct rte_eth_link link;
2276 struct virtio_hw *hw = dev->data->dev_private;
2278 memset(&link, 0, sizeof(link));
2279 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2280 link.link_speed = ETH_SPEED_NUM_10G;
2281 link.link_autoneg = ETH_LINK_FIXED;
2284 link.link_status = ETH_LINK_DOWN;
2285 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2286 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2287 vtpci_read_dev_config(hw,
2288 offsetof(struct virtio_net_config, status),
2289 &status, sizeof(status));
2290 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2291 link.link_status = ETH_LINK_DOWN;
2292 PMD_INIT_LOG(DEBUG, "Port %d is down",
2293 dev->data->port_id);
2295 link.link_status = ETH_LINK_UP;
2296 PMD_INIT_LOG(DEBUG, "Port %d is up",
2297 dev->data->port_id);
2300 link.link_status = ETH_LINK_UP;
2303 return rte_eth_linkstatus_set(dev, &link);
2307 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2309 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2310 struct virtio_hw *hw = dev->data->dev_private;
2311 uint64_t offloads = rxmode->offloads;
2313 if (mask & ETH_VLAN_FILTER_MASK) {
2314 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2315 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2318 "vlan filtering not available on this host");
2324 if (mask & ETH_VLAN_STRIP_MASK)
2325 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2331 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2333 uint64_t tso_mask, host_features;
2334 struct virtio_hw *hw = dev->data->dev_private;
2336 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2338 dev_info->max_rx_queues =
2339 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2340 dev_info->max_tx_queues =
2341 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2342 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2343 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2344 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2346 host_features = VTPCI_OPS(hw)->get_features(hw);
2347 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2348 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2349 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2350 dev_info->rx_offload_capa |=
2351 DEV_RX_OFFLOAD_TCP_CKSUM |
2352 DEV_RX_OFFLOAD_UDP_CKSUM;
2354 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2355 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2356 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2357 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2358 if ((host_features & tso_mask) == tso_mask)
2359 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2361 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2362 DEV_TX_OFFLOAD_VLAN_INSERT;
2363 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2364 dev_info->tx_offload_capa |=
2365 DEV_TX_OFFLOAD_UDP_CKSUM |
2366 DEV_TX_OFFLOAD_TCP_CKSUM;
2368 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2369 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2370 if ((host_features & tso_mask) == tso_mask)
2371 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2375 * It enables testpmd to collect per queue stats.
2378 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2379 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2380 __rte_unused uint8_t is_rx)
2385 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2386 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2387 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2389 RTE_INIT(virtio_init_log)
2391 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2392 if (virtio_logtype_init >= 0)
2393 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2394 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2395 if (virtio_logtype_driver >= 0)
2396 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);